Sino Korean vs Native Korean Words: How They Work, with Examples

Key facts

• Native words are common in the body, nature, family and basic verbs. Sino-Korean words are common in school, work, news and abstract ideas.
• Many ideas have both: 이름 (name) and 성명 (full name on a form), 밥 (rice, meal) and 식사 (meal).
• Numbers also have two systems. Use native numbers with counters like 명 and Sino-Korean numbers for dates, prices and floors.
• The page has a 20-pair table, rules of thumb with exceptions, and a 10-word sorting quiz with an answer key.

Sino Korean vs Native Korean Words at a Glance

Korean vocabulary has three layers, and each layer feels a little different. The Standard Korean Dictionary (표준국어대사전), kept by the National Institute of Korean Language (국립국어원), marks the origin of each entry, so you can check any word. As a learner, you do not need the dictionary for every word. You need a feel for the layers.

Native words are not more 'Korean' than Sino-Korean ones. Both are fully Korean. Sino-Korean words were built over centuries from syllables that came from Chinese characters. Koreans read these syllables with Korean sounds and write them in Hangul. Many Sino-Korean words are everyday words, like 학교 and 시간. For a full list of fifty, see Sino-Korean words.

How Can You Tell Which Layer a Word Belongs To?

No single clue works for every word, but these four help.

1. Look it up. The Standard Korean Dictionary marks origin. A Sino-Korean entry shows the hanja after the word.
2. Does it follow a Sino-Korean pattern? Endings such as -자, -성, -화, -학 and beginnings such as 불-, 무- point to Sino-Korean. See Sino-Korean prefixes and suffixes.
3. Does it start with ㄹ? In standard South Korean spelling, native and Sino-Korean words do not begin with ㄹ. A word that starts with ㄹ, such as 라디오 or 레몬, is a loanword. The Sino-Korean word for 'reason' is 이유 (iyu), not 리유.
4. Does it need 하다 to be a verb? Most nouns that become verbs with 하다 are Sino-Korean or loanwords: 공부하다, 운동하다, 샤워하다. Native verbs stand alone: 먹다, 가다, 보다. Some native nouns also take 하다, such as 일하다 (to work), so treat this as a hint, not a rule.

Pairs That Mean the Same Thing

Korean often has two words for one idea. The native word is usually the everyday one. The Sino-Korean word is usually more formal, more technical or more respectful. In many cases the Sino-Korean side is a syllable or a compound, not a standalone word, and it shows up in other words. The table gives 20 pairs, each with a note on how they differ. Some rows pair a native word with a Sino-Korean word built from the same idea, so the meanings are close but not always identical.

Notice three patterns. First, native words are often short and stand alone: 물, 불, 길, 집. Second, Sino-Korean words are often compound words with two or more syllables: 도로, 가정, 연령. Third, the Sino-Korean syllable is reused. 수 appears in 수영 and in 수요일, so one syllable unlocks many words.

What Are the Rules of Thumb, and What Are the Exceptions?

Use these as a guide. Each one has exceptions, and the exceptions are listed here.

The most useful exception is time. 오늘 (today) and 어제 (yesterday) are native, but 내일 (tomorrow) is Sino-Korean. The second most useful is the one-syllable words that feel native but are not: 책 (book), 문 (door), 산 (mountain), 강 (river) and 방 (room) are all Sino-Korean. Short does not mean native.

When Do You Choose the Sino-Korean Word?

Pick the layer by register, meaning how formal, technical or respectful the situation is. A good rule is to use the native word with friends and in daily talk, and the Sino-Korean word on forms, in news, in polite speech to elders and in science.

Compare these two questions. The first is for a friend and the second is respectful, for an older person or a customer.

The honorific nouns (성함, 연세, 생신, 댁) are all Sino-Korean. They respect the other person, so never use them for yourself. Say 제 이름은 민수예요, not 제 성함은 민수예요.

What about Numbers and Counters?

Numbers show the two layers clearly. Korean has a native set (하나, 둘, 셋) and a Sino-Korean set (일, 이, 삼). The same idea can need different systems, depending on the word that follows. 세 개 (three items) uses a native number with the counter 개, and 삼 층 (third floor) uses a Sino-Korean number with 층. The full rules are in Sino Korean vs native Korean numbers, and the counters are on Korean counters. Here is the short version for words:

• Native numbers go with most counters for things you can hold or count: 한 개, 두 명, 세 마리.
• Sino-Korean numbers go with dates, prices, floors, minutes and phone numbers: 삼월, 오천 원, 이 층, 십 분.
• A word's layer does not decide the number system, but the counter does.

What Are Hybrid Words and Traps?

A word can mix layers. 한국말 (hangungmal) joins Sino-Korean 한국 (Korea) with native 말 (speech). 한국어 (hangugeo) is all Sino-Korean and sounds more formal. 손목시계 (wristwatch) joins native 손목 (wrist) with Sino-Korean 시계 (clock). These mixed words are very common, and they show that Korean does not keep the layers apart.

Watch for three traps.

1. One-syllable Sino-Korean words. 책, 문, 산, 강 and 방 feel basic, but they trace to Sino-Korean roots in the dictionary.
2. Native words with Sino-Korean roots. Word historians trace 김치 and 배추 back to older Sino-Korean words (沈菜 and 白菜), but the sounds changed so much that dictionaries now list them without hanja, as ordinary words. You do not need to remember this to speak, but it explains why the layers blur.
3. Loanwords that look native. 빵 (bread) came into Korean from Portuguese through Japanese, so it is a loanword even though it sounds like a Korean word.

Try It: Sort Ten Words

Say each word aloud and decide whether it is native or Sino-Korean. The ten words are the plain ones you learned above. Tap a clip to hear it.

Write down your ten answers, then check them in the key.

Answer Key

Eight or more right means you have the main idea. If you missed words, ask whether the word names a basic nature thing, a body part or a family word (native) or a school, public or abstract thing (Sino-Korean).

How Do You Pronounce These Words?

Both layers follow the same sound rules. The Standard Pronunciation Rules (표준 발음법) of the National Institute of Korean Language (국립국어원) apply to all of them, and the romanization follows the Revised Romanization of Korean.

• Tensing after a stop. In both layers, a plain consonant after a final ㄱ, ㄷ or ㅂ is tense (Article 23): 학교 is [학꾜] and 약속 is [약쏙]. Romanization does not show tensing caused by a neighbouring sound.
• Hybrid compounds. In 한국말 the final ㄱ turns to ㅇ before ㅁ, so it is said [한궁말]. In 손목시계 the ㅅ after ㄱ is tense, so it is said [손목씨계].
• Moving forward. 한국인 is [한구긴]: the ㄱ moves to the next syllable.

Audio and Slow Playback

Each word has its own clip. The clips below replay three words slowly. Play one, repeat it, then play it again and compare.

What Mistakes Do Learners Make with the Two Layers?

Five mistakes come up often.

1. Using honorific Sino-Korean words for yourself. 성함, 연세 and 생신 are for other people.
2. Treating a Sino-Korean word as a stiff word. 학교 and 시간 are Sino-Korean and fully casual.
3. Assuming one-syllable words are native. 책, 문 and 산 are not native.
4. Mixing number systems. Use 세 명 (native), not 삼 명, for three people, and 삼 층 (Sino-Korean), not 세 층, for the third floor.
5. Forcing a Sino-Korean word where a native one is natural. Say 물 (water) at a restaurant, not 수.

The best fix is to learn each new word with its layer in mind, and to note any pair that shares a meaning.

Practice: Quiz and Next Steps

Take the five-question quiz below, then drill the word lists with the vocabulary flashcard decks and the Sino-Korean words flashcards.

For the number rules, go to Sino Korean vs native Korean numbers. For how Sino-Korean words are built, go to Sino-Korean prefixes and suffixes. Use the tables on this page for practice on paper. To go up, return to Sino-Korean Words.

Frequently Asked Questions

What Is the Difference between Sino-Korean and Native Korean Words?

Native Korean words (고유어) are the old words of the language, such as 하늘 (sky) and 사람 (person). Sino-Korean words (한자어) are built from syllables that came from Chinese characters, such as 학교 (school) and 시간 (time). Both are fully Korean, and both appear in everyday speech.

Which Is More Formal, Sino-Korean or Native Korean Words?

Sino-Korean words are often more formal, technical or respectful, as in 식사 (meal) against 밥 (rice, meal), and 성명 (full name on a form) against 이름 (name). But common Sino-Korean words like 학교 and 시간 are completely casual. Formality depends on the word pair, not on the layer alone.

Are Sino-Korean Words Written in Chinese Characters?

Almost never in daily writing. Sino-Korean words are written in Hangul. Hanja are used for etymology, in some names and in a few formal or academic settings. You can learn all of the vocabulary in this lesson without knowing a single character.

How Do I Know Whether a Korean Number Is Native or Sino-Korean?

Look at what follows it. Native numbers go with counters such as 명, 개, 마리 and 잔, as in 세 명. Sino-Korean numbers go with dates, prices, floors and minutes, as in 삼 층 and 오천 원. The counters lessons list which counter takes which system.

Why Are 책 and 문 Sino-Korean If They Feel Native?

Because Korean borrowed them long ago and they became ordinary words. 책 (book) and 문 (door) come from Sino-Korean roots, while 하늘 and 바다 are native. The dictionary marks the origin. For a learner, only the sound and the meaning matter.

Is the Romanization on This Page Official?

It follows the Revised Romanization of Korean, which South Korea adopted on 7 July 2000 and whose rules the National Institute of Korean Language (국립국어원) publishes. It is a learning aid and does not mark every sound change, so rely on the Hangul and the audio.

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