Owner review 12, lane K2: do Korean-word names travel? (2026-10-13)

Status: Draft · Date: 2026-10-13 · Lane K2 of owner review 12. Question (owner, verbatim in the shared brief): plain two-syllable Korean words that non-Korean speakers can say comfortably, as app-name candidates; the owner already uses Maru (마루) for a healthcare app, so Maru is excluded and anything near it is flagged. Web research only, 2026-10-13. No domain, store or trademark searches (the owner will authorise those after a name is chosen). Nothing outside this file was changed.

0. Evidence tags and limits

Tag	Meaning
W	Read in a web result or fetched page on 2026-10-13, link given.
G	My own general knowledge or reading of a word. Not sourced; needs a native check.
X	Not checked or not found. Said so rather than guessed.

Honest limit up front: the web search tool returned thin material for several questions. I found no study that tests how English, Spanish or Japanese speakers misread Revised Romanization (RR), no study of Korean-word brand names in Western markets, no company statement on why 당근 became Karrot abroad, and no official 2025 to 2026 Duolingo Korean learner count. Those are marked X below. The rules in section 3 are therefore G, built on the official RR rules (W), and should be treated as a checklist to test with native speakers, not as measured fact.

1. Brands built on a plain Korean word

Brand	Word and meaning	Abroad: kept, translated or replaced	Said right abroad?	Trouble found
Hyundai 현대	"modern times" (G)	Kept	No: UK says "Hy-un-dai"; US says "Hyun-day" or "Hun-day" (Electrifying, Car Magazine, W via search summary)	Two UK campaigns to fix it: about £1.2 million from 1999, abandoned after surveys showed little effect; a second from December 2022 where voice search sent the old pronunciation to "High 'N' Dye Hair Salon" and "Highland Eye opticians". No result measured the 2022 effect. A US Super Bowl ad taught "It's Hyundai, like Sunday" (single source, Carscoops). The one hard case of a Korean word that travelled and was said wrong for decades. The cause is the letters "yu" and "ai", not the word's length.
Daum 다음	"next" (G)	Kept; merged into Kakao in 2014, brand dropped to Kakao in 2015 (Kakao, Wikipedia, W)	X: no data	Not a global brand; the merger ended it. "Daum" reads "dawm" to an English eye (G).
Hana 하나	"one" (G; the sources I found for this were low quality, so the meaning is X as sourced)	Kept: Hana Bank, Hana Financial Group (Wikipedia)	Yes (G): "Hana" is also a Japanese, Hebrew and Arabic name, so every reader has a vowel pattern for it	None found. It works because a-a-a is the safest vowel shape (section 3).
Nuri 누리	"world" (older word), the KSLV-II rocket, named by public contest (Korea Times, W)	Kept; the English press uses "Nuri"	Yes (G): two open vowels, no cluster	None found. A national project, not a consumer brand.
Mirae 미래	"future" (W: Institutional Investor)	Kept; the group unified its global brand as "Mirae Asset" in 2021 (Asia Economy, W)	Mixed (G): "Mirae" can read "Mih-ray", "Meer-eye" or "Mi-rae"; the "ae" is the risk	None found, but the company pairs it with "Asset" everywhere (a descriptor, as review 10 rules).
Gaon 가온	"centre" (G)	Replaced. The Gaon Chart became the Circle Chart on 2022-07-07 to shed its domestic image and become a global K-pop chart (Soompi, W)	X	The owner of the Korean word chose to translate it ("circle" is a plain-English gloss of the idea) at the moment it went global. The reason given was image ("domestic"), not pronunciation.
Danggeun 당근 (Karrot)	"carrot"; also a pun on "in your neighbourhood" (W: KED Global)	Translated. Abroad the company trades as Karrot; UK Nov 2019, Canada Sept 2020, US Oct 2020, Japan Feb 2021; over 1 million users in Canada (Douglas Research, W)	n/a (name was changed)	I found no company statement on why (X). The inference (G): "Danggeun" has a "ng" plus "g" cluster that English speakers mangle ("dang-gun"), and "Karrot" is a free, memorable English word with the same meaning. The strongest single case in this lane of a Korean word that did not travel unchanged.
Baemin 배민	Short for 배달의민족, "the nation of delivery" (W: CB Insights and others)	Korea only; the Woowa parent (Delivery Hero) has not used it abroad as a brand (G)	X	Not a plain word; a clipped phrase. Not evidence either way.
Coupang 쿠팡	A coined name. Sources conflict: "rocket" in one, 库房 "storehouse" in a Wikipedia mirror (Wikipedia, W)	Kept (US-listed)	Yes (G)	Coined, not a plain word. Shows a two-syllable coined shape with an open vowel travels fine.
Toss 토스	English "toss" in Hangul (G); I found no source on why it was chosen (X)	Kept as "Toss"	Yes	Not a Korean word at all. It is the control case: a short English word written in Hangul.
Maru 마루	Hanok floor, ridge (brief); a web summary glossed it "floor" (RWTH student page, old and low authority)	Kept	Yes (G)	Crowded as a name: a Korean remittance app "마루 해외송금" by 주식회사 마루, a kana-learning app "MARU: Learn Japanese Hiragana" (over a million downloads by its developer's claim), and a Korean association app, all in the App Store (Apple). Shows how many people pick this exact word. I found no Naver or LINE "Maru" product (X).
Nara, Ara, Dasom, Baro, Narae 나래, 아라, 다솜, 바로	Wings; "sea" (old); love (old); "straight, right away"	X: I found no globally known brand on any of these	X	Not checked for apps (the search returned nothing). Left to the candidate lanes.

What the table shows (W where the table is W):

• Four of ten Korean-word brands I could place kept their word abroad (Hyundai, Hana, Nuri, Mirae). The two that went to a global audience and were judged on name alone both changed it (Gaon to Circle, Danggeun to Karrot). The count is small and is not a sample.
• Every kept name has an easy vowel shape (Hana, Nuri) or a known mispronunciation (Hyundai, Mirae).
• None of the changed names was changed for a bad meaning. The stated reason was image (Gaon) or is unknown (Karrot). That is a case for "the Korean word is fine in meaning; its spelling is the risk", not proof.

2. Korean words in the world's vocabulary, 2021 to 2026

OED, September 2021. The update added 26 Korean-origin words, in a batch of over 1,650 new words. The lists differ a little across outlets (one has Hangul and Konglish, another has trot), so I could not verify the exact 26 against the OED itself (X). All outlets include hallyu, daebak, mukbang, aegyo, banchan, oppa, unni, noona, bulgogi, kimbap, chimaek and "fighting" (as a cheer), plus the "K-" prefix and K-drama (ABS-CBN, Hypebae, Boomlive, W).

Syllables (G, my count of the Korean word): hallyu (한류), daebak (대박), mukbang (먹방), banchan (반찬), oppa (오빠), unni (언니), noona (누나) are two syllables; aegyo (애교) is two; kimbap (김밥) and chimaek (치맥) are two; bulgogi is three. Most of the batch is two syllables (G). Why they stuck is my inference, not sourced: each travelled with content (K-drama, K-pop, food) and fills a gap English has no short word for. None was picked for being easy to spell: "unni" and "noona" are respelled to be readable ("eonni" is the RR), and "oppa" carries a doubled consonant. Respelling for the reader is what the dictionary kept.

Duolingo. I did not find an official 2025 to 2026 learner count (X; the 403 on Duolingo's own release blocked a read). Reported figures, third party and conflicting: 17.4 million Korean learners "as of 2025" (Duolingo Guides) against about 1.9 million active learners at the time of the rebuild, ranked sixth most popular (a different outlet, found through the same search). Verified through search summaries only: Duolingo announced 148 new courses in April 2025 including Korean for more interface languages (Duolingo investors), and rebuilt the Korean course in 2026 with a Hangeul tab and content up to B2 (Duolingo blog). Use no Duolingo number in a decision; the direction (growing) is the only safe claim.

Is a Korean name an asset or a cost for a sports app abroad? I found no study that tests this (X). The search turned up only general country-of-origin work (for example a 2016 study of 261 Indonesian buyers of Korean cosmetics found a positive link, Atlantis Press, W; it studies Indonesia, not a Western sports app). The honest summary: the Korean wave is a real tailwind for food, music and beauty; for amateur tennis I found no evidence in either direction. Tennis is not a Korean-associated category, so a Korean name would carry no "premium" for it, and nothing found says it would cost.

3. How non-Koreans read Revised Romanization

What is sourced (W). RR's stated purpose is "to romanize proper nouns such as place names, personal names, and business names"; it uses Roman letters only. The rules: ㅓ = eo, ㅡ = eu, ㅐ = ae, ㅗ = o, ㅜ = u, ㅢ = ui (not "eui"); initial ㄱ ㄷ ㅂ ㄹ = g d b r; the same letters at the end of a word or before a consonant = k t p l; final ㅇ = ng (Wikipedia: Revised Romanization). An official voice is quoted there: "Spelling does not perfectly show pronunciation". A 1999 critique said the system ignores the foreign user and that officials planned to educate foreigners (koreanstudies list, W). That is, RR was not built to be read right by foreigners at first sight.

What is not sourced (X). I did not find a study on which spellings English, Spanish or Japanese speakers misread. Section 3's table below is my reading (G) of the vowel and consonant inventories and should be verified with native speakers in each language.

Shape in RR	Likely reading by English / Spanish / Japanese speaker (G)	Verdict
a, i, o, u as single letters (Hana, Nuri)	Near-correct in all three; Spanish and Japanese vowels are the same five	Reads right
eo (as in "Seoul")	English: "ee-oh" or "e-o", two sounds; Spanish: "eh-oh"; Japanese: エオ. The real sound is one vowel, about "uh" or "aw"	Misread: avoid
eu	English: "you"; Spanish: "eh-oo"; Japanese: エウ. The real sound is a vowel English lacks	Misread: avoid
ae	English: "ay" or "eye"; Spanish: "ah-eh" (a diphthong); Japanese: アエ. The real sound is close to "eh"	Misread: avoid or respell as "e"
ui	English: "wee" or "oo-ee"; Japanese: ウイ. The real sound varies	Misread: avoid
ㅓ/ㅗ merger: RR writes ㅓ as "eo" and ㅗ as "o", but many Korean speakers merge them in some environments and learners cannot hear the gap	Not a spelling problem: the reader sees "o" and says "o"	Choose the "o" spelling; it reads right
Initial g / k, d / t, b / p	Korean plain stops are unaspirated, between English "g" and "k". English reads "g" as g and "k" as k; Spanish and Japanese are close to Korean	No fix needed; either letter works. Prefer the voiced letter (g, d, b) for an RR-clean reading, but "t" and "k" read just as well
Final -ng	English reads "ng" right (sing); Spanish and Japanese often say "n" or "ng-u"	OK for English; mild risk elsewhere. Avoid a final "ng" followed by "g" (Danggeun: "dang-gun", then "dan-geun")
r / l	RR "r" before a vowel is a tap, near Spanish "r" and Japanese ら; English says an r. At the end or before a consonant RR writes "l"	Avoid r/l in the middle of a candidate; Japanese cannot tell them apart and English hears an "r" for what is a tap
Doubled consonants (kk, tt, pp)	English: a hard double; Spanish: fine	Avoid; do not use "oppa"-type spellings

Is a respelling better than RR? Toss versus "Toseu". Yes, when RR gives eu: a reader sees "Toseu" and says "toh-soo" or "toh-seh-oo"; they see "Toss" and say "toss". Toss is a deliberate respelling (G: the Hangul 토스 would be RR "toseu"; the app chose the English spelling, which reads right on first sight). Hyundai is the contrary case: the company kept an RR-faithful spelling and the world mispronounced it for decades. Rule of thumb: a respelling that a Spanish and a Japanese speaker would both read right is better than strict RR. Hana, Nuri and Maru already pass because they only use the five plain vowels.

4. Trademark notes

All G or W-via-search; none of this is legal advice and the owner has said a search comes after the name is chosen.

• KIPO. Korean Trademark Act Article 33(1) bars a mark that consists solely of a very simple and commonplace sign (KIPO gives "123", "ONE", "TWO" as examples), a common slogan, or a conspicuous geographical name (KIPO, IPWatchdog, W). Distinctiveness is judged at the time of the registration decision, and a combined mark as a whole. Article 33(2) lets a mark without inherent distinctiveness register after acquired distinctiveness. So a plain word that does not describe a tennis-club app (a "Hana"-type word) is normally registrable; a word that says "club", "team" or "together" in class 41 or 42 risks being too descriptive. Pairing with a descriptor (review 10) helps the user, not the examiner.
• USPTO. The doctrine of foreign equivalents: a foreign word is translated to English for descriptiveness and confusion. It is a guideline, not an absolute rule, and applies when the "ordinary American purchaser" would "stop and translate", usually for a common, modern language and a literal, direct translation (Wikipedia, Mondaq, TMCA, W via search summary; TMEP 1207.01(b)(vi) and 1209.03(g) were not read directly, X). Korean is a language the brief calls a word judged "by that meaning". The practical risk: a Korean word meaning "together" or "yard" is tested for descriptiveness by that meaning; whether Korean counts as common and modern enough to trigger the doctrine for an American purchaser is X.
• EUIPO. A non-official language can still make a word descriptive if a significant share of the relevant public understands it (the Court of Justice PLOMBIR case, a Russian word, C-142/19 P) (Hogan Lovells, W via search summary). Korean-specific EUIPO practice: not found (X). Korean speakers are a small share of any EU country, so descriptive refusal on a Korean word is unlikely, but a later conflict with a same-word mark in another language is the larger risk.
• Crowding (a fact from section 1). A plain word that Koreans pick often is crowded: Maru already has several app owners. That is a clearance cost, not a registrability bar.

5. Recommend

5.1 Rules a Korean-word name must pass to travel (G, from sections 1 to 4)

1. Only plain vowels: a, e (as in "bed"), i, o, u. No eo, eu, ae, ui, oe, wi, or "yu / yi" letters (Hyundai's trap).
2. Two syllables, open: consonant-vowel, consonant-vowel. No final consonants or one soft one (n, m). Never "-ng" followed by g.
3. No r/l in the middle (Japanese cannot hear it; English hears an English r). A single initial r or l is the least risky; none is safest.
4. No double consonants, no aspirates that need an apostrophe or a second letter (kk, tt, ch/j choice).
5. Respell, don't transliterate, if a plain shape needs it: judge "Toss" over "Toseu", and read the final candidate aloud as a Spanish and a Japanese speaker would.
6. Check the Hangul and the English sound do not diverge. The name should be one spelling in both scripts.
7. No surface meaning in English or Spanish, and none that describes the service (the review-11 screen, plus the USPTO point in section 4).
8. Not a crowded word (Maru-type). Clearance is for the owner's later step.
9. Not near Maru: if two apps share one owner and one pattern, a near-twin (Mara, Maro, Muru) will confuse the stores and the user.

5.2 Korean word or foreign word (Enda, Mazi)?

• Evidence: the two global-minded Korean companies in the table (Gaon, Danggeun) replaced their Korean word, one for image reasons, one for unknown reasons. The kept names are either vowel-safe (Hana, Nuri) or paid for decades of mispronunciation (Hyundai). There is no evidence that a Korean word is an asset for an amateur tennis app abroad, and none that it is a cost.
• Verdict: evidence does not decide this; it narrows it. A Korean word is a fair bet only if it passes all nine rules, which a small set of words do (open Cv-Cv words using a, i, o, u). Such a word is a tie with Enda and Mazi on pronunciation. It is weaker on search and trademark: a plain Korean word is a shared word in Korea, so brand and clearance work is harder (the reason review 11 prefers a foreign or coined word). It is stronger on one thing the data does not measure: it is the owner's own language and can carry the 두 개 더 idea openly rather than hidden.
• My view (not evidence): if the owner wants the global ambition to win, keep Enda or Mazi as leaders. A Korean word is worth a place on the list only when its Hangul and Latin forms are both clean and its clearance is not Maru-crowded. I did not generate candidates here; that is another lane's job.

5.3 What is left to taste

• Whether a Korean word's cultural flavour (hanok, hallyu) is wanted on an amateur-tennis brand, or a neutral sound is.
• How much the story "in Korean, this means X" is worth against the clearance cost.
• Whether the owner is happy with two Korean-word brands (Maru Health and this one) that read as one family.

5.4 Not checked

• Any study of RR misreading by English, Spanish or Japanese speakers.
• The exact OED list of 26; Duolingo official numbers; why Danggeun became Karrot; Hana's etymology from an authoritative source.
• TMEP text for the doctrine of foreign equivalents; any KIPO, USPTO or EUIPO decision on a Korean word.
• App Store or Play listings for any candidate word (by instruction).

Implementation

Nothing to build. This document feeds the review-12 candidate lanes and the rulings document. No board, kit or app file was touched.