This is the 5471st most frequent Korean word.
만원
10,000 won
In this sentence, "만원" is used to specify a monetary value (ten thousand won), indicating the price of the book.
이 책은 만원입니다.
This book is ten thousand won.
Here, "만원" refers to the state of being fully occupied or at full capacity, used metaphorically as "full house."
회의실은 현재 만원으로 사용할 수 없습니다.
The meeting room is currently full and cannot be used.
In this example, "만원짜리" refers to a bill in the denomination of ten thousand won, indicating a specific currency unit.