You can already describe one thing: 서울이 커요, 커피가 맛있어요. Real conversation rarely stops there. People ask which is better, which is the most, whether this is as good as that. At level 3, comparing is everywhere — in shops, in travel talk, in many reading passages about "then and now".
Korean compares with small words stuck to the noun, not with a new form of the adjective. The adjective stays exactly as you know it: 커요 is still 커요. Today you learn the four little words that do the work.
1 · 보다 — "than"
Put 보다 straight after the thing you are comparing against. The thing that wins takes 이/가 (or 은/는) as usual.
서울이 부산보다 커요. — Seoul is bigger than Busan.
You may add 더 (more) before the adjective. It is optional, but very common in speech, and it makes the comparison clearer when the sentence is long.
| Korean | Meaning |
|---|---|
| 서울이 부산보다 커요 | Seoul is bigger than Busan |
| 지하철이 버스보다 빨라요 | The subway is faster than the bus |
| 오늘이 어제보다 더 추워요 | Today is colder than yesterday |
| 저는 커피보다 차를 더 좋아해요 | I like tea more than coffee |
| 오늘은 어제보다 덜 추워요 | Today is less cold than yesterday |