When two things aren't more or less than each other but simply the same, different, or similar, Korean reaches for three descriptive adjectives — 같다 "be the same," 다르다 "be different," 비슷하다 "be similar" — rather than the 더/보다 comparison machinery. These three come with two traps that snag almost every English speaker: they all take the same particle where English uses three different prepositions, and one of them, 다르다, hides a nasty 르-irregular conjugation. Nail those two points and this whole corner falls into place.
All three take 와/과 — Korean's one comitative particle
In English you say "the same as X," "different from X," "similar to X" — three different prepositions. Korean flattens all three onto one particle: the comitative 와/과 ("with / and"). The second item in the comparison gets 와/과, and the adjective closes the sentence.
| English | Korean pattern | Adjective |
|---|---|---|
| same as | A는 B와/과 같아요 | 같다 |
| different from | A는 B와/과 달라요 | 다르다 |
| similar to | A는 B와/과 비슷해요 | 비슷하다 |
이 가방은 제 것과 같아요.
i gabang-eun je geotgwa gatayo
This bag is the same as mine.
한국어는 일본어와 많이 달라요.
hangugeoneun ilboneowa mani dallayo
Korean is very different from Japanese.
이 색이 저 색과 비슷해요.
i saegi jeo saekgwa biseuthaeyo
This color is similar to that color.
Notice 와/과 doesn't translate as "with" here — it's the same particle, but with these three adjectives it means "as / from / to." The key mental shift: don't hunt for a Korean word for "from" or "to." The comparison partner is grammatically a companion of the thing it's compared with, so it takes the companion particle. (In casual speech, 와/과 is usually swapped for 하고 or (이)랑 — see the comitative 와/과 page for the register ladder.)
저는 동생하고 성격이 달라요.
jeoneun dongsaenghago seonggyeogi dallayo
My personality is different from my younger sibling's. (casual 하고)
목소리가 엄마하고 비슷해요.
moksoriga eommahago biseuthaeyo
Your voice is similar to your mom's.
The 르-irregular in 다르다: 다르 + 아 → 달라
다르다 belongs to the 르-irregular class, and its conjugation is the single most-botched form in this trio. When a 르-stem meets a vowel ending (-아/어), the 으 of 르 drops and the ㄹ doubles, so 다르 + 아 becomes 달라 (not ×다러). This gives you 달라요 (present), 달랐어요 (past), 달라서 "because it's different."
| Form | 다르다 | Note |
|---|---|---|
| 해요체 present | 달라요 | 르 → ㄹㄹ before 아/어 |
| past | 달랐어요 | same doubling |
| 합니다체 | 다릅니다 | consonant ending — no doubling |
| attributive | 다른 | before ㄴ — no doubling (다른 사람) |
답이 서로 달라요.
dabi seoro dallayo
The answers are different from each other.
The doubling only happens before the vowel ending 아/어. Before a consonant ending, 르 sits still: the formal 다릅니다 and the attributive 다른 keep a single ㄹ (다른 사람 "a different person / someone else"). 같다 and 비슷하다 are far tamer — 같다 is regular (같아요, 같은), and 비슷하다 is a plain 하다-adjective (비슷해요, 비슷한). The 르 pattern reappears across many common words (빠르다 → 빨라요, 부르다 → 불러요); its full treatment is the 르-irregular page, and it's a cousin of the 으-irregular.
다르다 (different) is not 틀리다 (wrong)
Here is a distinction Koreans themselves blur in casual speech, but that a learner should keep crisp. 다르다 means "different"; 틀리다 means "wrong / incorrect (of an answer, a fact)." Many native speakers colloquially say 틀리다 when they mean "different" — 나랑 생각이 틀려 for "your thinking differs from mine" — but this is widely flagged as a usage slip, and using 틀리다 for "different" can imply the other thing is mistaken, which is often not what you mean.
생각이 다른 거지, 틀린 게 아니에요.
saenggagi dareun geoji, teullin ge anieyo
It's a different opinion, not a wrong one.
That sentence — 다른 것 "a different thing," not 틀린 것 "a wrong thing" — is a small piece of everyday wisdom you'll hear Koreans use to correct exactly this confusion. Keep 다르다 = different, 틀리다 = mistaken, and you'll sound more careful than many natives.
같다 also means "seems like"
같다 has a huge second life beyond "the same": with a noun in front, N + 같다 means "is like N / seems like N." 천사 같다 isn't "identical to an angel" — it's "[seems] like an angel."
저 사람은 꼭 천사 같아요.
jeo sarameun kkok cheonsa gatayo
That person is just like an angel.
This "seems / is like" 같다 opens the whole conjecture system — 인 것 같아요 "it seems that…," 비 올 것 같아요 "it looks like it'll rain." That sensory/conjectural 같다 is big enough for its own page: 같다 for 'seems' and sensory description. Here, just register that the same word covers both "the same as" (with 와/과) and "like / seems" (with a bare noun).
Common Mistakes
1. Conjugating 다르다 as ×다러요. The 르 doubles before 아/어 → 달라요.
❌ 한국어는 일본어와 다러요.
Wrong — 다르다 is 르-irregular; the form is 달라요, not ×다러요.
✅ 한국어는 일본어와 달라요.
hangugeoneun ilboneowa dallayo
Korean is different from Japanese.
2. Hunting for a word for "from / as / to." All three use 와/과 (or 하고/랑), never a "from" word.
❌ 한국어는 일본어에서 달라요.
Wrong — 에서 is 'from (a place)'; 'different from X' is X와/과 달라요.
✅ 한국어는 일본어와 달라요.
hangugeoneun ilboneowa dallayo
Korean is different from Japanese.
3. Using 틀리다 to mean "different." 틀리다 is "wrong," not "different."
❌ 제 생각은 형하고 틀려요.
Says 'my thinking is wrong compared to my brother's' — for 'different' use 달라요.
✅ 제 생각은 형하고 달라요.
je saenggageun hyeonghago dallayo
My opinion is different from my brother's.
4. Marking the second item with the object particle. The comparison partner takes 와/과, not 을/를.
❌ 이 가방은 제 것을 같아요.
Wrong — 같다 takes 와/과 on the compared thing: 제 것과 같아요.
✅ 이 가방은 제 것과 같아요.
i gabang-eun je geotgwa gatayo
This bag is the same as mine.
Key Takeaways
- 같다 (same), 다르다 (different), 비슷하다 (similar) all mark the compared item with one particle, 와/과 (spoken 하고/랑) — where English uses three prepositions (as / from / to).
- 다르다 is 르-irregular: 다르 + 아 → 달라요 (never ×다러요); but 다릅니다 and 다른 keep a single ㄹ before consonant endings.
- Keep 다르다 = different apart from 틀리다 = wrong, even though Koreans casually blur them.
- 같다 doubles as "is like / seems" with a bare noun (천사 같다) — the gateway to the conjectural 것 같다.
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- Comparing with N보다 (than) + 더TOPIK 2 — Build a full comparison by marking the standard with 보다 'than' and leaving 더 'more' in front of the plain adjective: 여름이 겨울보다 더 더워요. The order flips from English, because Korean marks roles with particles, not position.
- Color & Sensory Adjectives, and 같다 ('seems like')TOPIK 2 — The everyday sensory adjectives — taste (달다·쓰다·짜다·시다·맵다), texture, and sound — plus the single most important hedging tool in Korean: 같다. NOUN + 같다 ('is like…') and [clause] + 것 같다 ('it seems that…'), the softener Koreans reach for instead of a blunt opinion.
- The 으-Drop: 예쁘다 → 예뻐요, 크다 → 커요TOPIK 1 — Every stem ending in the vowel ㅡ drops it before -아/어, taking its harmony vowel from the syllable before the ㅡ (default 어 if none) — a fully regular pattern that also governs ㅡ-stem action verbs like 쓰다 → 써요.
- 와/과: 'And' / 'With' (Written)TOPIK 1 — The neutral, written-register particle that both lists nouns ('A and B') and marks a companion ('with') — with an allomorph that runs backward from every other particle: 와 after a vowel, 과 after a consonant.