Inkuntri
CJK Vocabulary

False friends across Chinese, Japanese, and Korean.

Shared characters can create a false sense of safety. A word may look stable across Chinese, Japanese, and Korean because the written form survives, even while the modern meaning drifts in one language or narrows sharply in another.

This page keeps the risky items together so you can compare the form, the reading, and the actual usage side by side. The goal is not to memorize trivia. The goal is to stop trusting a familiar-looking graph too quickly.

Overview

Last updated April 15, 2026.

  1. Compare same-looking CJK words that drift into different meanings across Mandarin, Japanese, and Korean.
  2. Vocabulary becomes easier to retain when related forms are grouped as families, contrasts, or high-utility early items rather than isolated trivia.
  3. Use these pages as reference maps: they are designed to show why a word set belongs together, not just to list meanings.
Why these matter

Same writing does not guarantee same usage.

CJK learners eventually run into a specific kind of trap: a character string looks reassuringly familiar because you have seen it in another language, but the meaning has drifted. Sometimes the drift is small and register-based. Sometimes it is large enough to create a real misunderstanding.

This happens because Chinese, Japanese, and Korean share a long history of character-based vocabulary without sharing one single spoken language. A written form can survive while the local lexical life around it changes. One language keeps the old abstract sense, another develops a colloquial everyday meaning, and a third narrows or widens the word into something else.

The best way to use a false-friend list is not as a museum of trivia. Use it to train the reflex of asking same graph, but same usage? The cards below keep the forms together so you can compare the drift directly.

Explorer

Filter the high-risk items.

Search by graph, reading, or meaning, or limit the list to the three-way traps and the especially memorable Chinese-Japanese mismatches.

大丈夫

The same graph survives, but Japanese moved farthest in everyday usage.

Three-way drift
Mandarin
大丈夫
dàzhàngfu
a real man; a man of character
Japanese
大丈夫
daijōbu
all right; okay; safe; no problem
Korean
대장부 (大丈夫)
daejangbu
a great man; a manly person

Japanese turned this into a very common everyday reassurance formula, while Mandarin and Korean kept the older “great man” sense much more closely.

約束 / 约束

Japanese and Korean align here; Mandarin points toward restriction instead.

Three-way drift
Mandarin
约束
yuēshù
to restrain; restriction; constraint
Japanese
約束
yakusoku
promise; appointment; to promise
Korean
약속 (約束)
yaksok
promise; appointment

This is one of the cleanest three-way learner traps: the writing looks shared, but Mandarin moved toward control and restriction while Japanese and Korean kept the promise sense.

愛人 / 爱人

A famous example where modern social meaning splits sharply.

Three-way drift
Mandarin
爱人
àirén
spouse; beloved person
Japanese
愛人
aijin
lover; mistress; extramarital partner
Korean
애인 (愛人)
aein
lover; boyfriend; girlfriend

A learner who transfers the Japanese meaning directly into Mandarin can sound much more scandalous than intended.

人参

The same graph names a root, but not the same root.

Three-way drift
Mandarin
人参
rénshēn
ginseng
Japanese
人参
ninjin
carrot
Korean
인삼 (人參)
insam
ginseng

This is one of the best-known CJK false friends because the form looks completely stable while the Japanese everyday referent diverges.

工夫

One graph, three useful semantic directions.

Three-way drift
Mandarin
工夫
gōngfu
time; effort; care spent on something
Japanese
工夫
kūfu
device; ingenuity; practical contrivance
Korean
공부 (工夫)
gongbu
study

Historically related, but modern usage pulls in three directions: effort in Mandarin, ingenuity in Japanese, and study in Korean.

親切 / 亲切

Close in feeling, but not identical in social tone.

Three-way drift
Mandarin
亲切
qīnqiè
cordial; intimate; warm; close
Japanese
親切
shinsetsu
kind; thoughtful; helpful
Korean
친절 (親切)
chinjeol
kindness; courteous helpfulness

Japanese and Korean both lean toward practical kindness, while Mandarin often points more toward warmth, closeness, and cordiality.

冷蔵庫 / 冷藏库

A modern household object in Japanese and Korean, but a colder, more industrial phrase in Mandarin.

Three-way drift
Mandarin
冷藏库
lěngcángkù
cold-storage warehouse
Japanese
冷蔵庫
reizōko
refrigerator
Korean
냉장고 (冷藏庫)
naengjanggo
refrigerator

Japanese and Korean made this the normal household fridge word. Mandarin uses a different everyday refrigerator term and keeps 冷藏库 for larger storage contexts.

手紙 / 手纸

A classic two-language trap every learner should meet early.

Chinese-Japanese trap
Mandarin
手纸
shǒuzhǐ
toilet paper; tissue paper
Japanese
手紙
tegami
letter; written message
Korean
no common everyday Korean cognate in ordinary use

The form feels transparent to many beginners and is memorable precisely because the practical meanings are so far apart.

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