두껍다, 얇다

to be thick (through), to be thin (through)

Move over the question mark to see the meaning.

Thick book
? 책이 두껍습니다.
 

thin book
? 책이 얇습니다.
 

Other words that you can use with these verbs:

? 사전  

? 옷  

? 이불  

? 벽