보다 vs 처럼: Than Ranks, Like Copies

Two cups, two jobs

The same two drinks sit on the table. You can rank them, or you can copy a way of drinking.

커피가 차보다 싸요.
keopiga chaboda ssayo — Coffee is cheaper than tea.

보다 sets tea as the baseline. Coffee scores lower on price. A scale is in the sentence: 싸다.

Swap only the particle.

커피를 차처럼 마셔요.
keopireul chacheoreom masyeoyo — I drink coffee like tea.

처럼 does not rank. It copies a manner. No 더. No winner. If you meant “coffee is cheaper,” 차처럼 싸요 is the wrong line. It says coffee is cheap in a tea-like way, which is not a price list.

Height is the trap

형보다 커요 — you are taller than him. The older brother is the mark you passed.

형처럼 커요 — you are tall like him. You copied his size. You did not beat him.

Learners put 처럼 on a ranking they heard in English “like bigger than.” Korean does not stack them that way. 서울처럼 부산이 더 커요 is the broken report if the point was size rank. The rank sentence is 서울보다 부산이 커요.

보다 wants an adjective that can be more: 크다, 싸다, 많다, 좋다. 처럼 wants a picture: 선생님처럼 말해요, 아이처럼 웃어요.

가 often sits on the thing that takes the score: 커피가 차보다 싸요. Coffee is the new information on the scale. 처럼 does not need that contest. 선생님처럼 말해요 has no winner, only a copy. Putting 이/가 on both sides and 처럼 in the middle does not invent a rank you forgot to say.

Do not leave them interchangeable

A cafe menu can take 보다: 이 케이크가 저거보다 달아요. A habit can take 처럼: 한국 사람처럼 젓가락질해요. Same kitchen. Different particle.

If you only remember one test, use this. Is someone winning a scale? 보다. Are you drawing a likeness? 처럼. The sentence that uses the other one is not a softer version. It is the other job.

A last broken line, so the swap stays sharp. 이 가방이 저 가방처럼 더 싸요 tries to rank with 처럼 and 더 at once. If the point is price, say 이 가방이 저 가방보다 싸요. Keep 처럼 for the way you wear it, not for the tag.