많다

In a sentence

• 도서관에 책이 많다.

  There are many books in the library.

  Here, '많다' is used to describe the quantity of something existing in a place.

• 나는 해야 할 일이 많다.

  I have a lot of work to do.

  Here, '많다' expresses the amount or volume of personal responsibilities or tasks.

• 그 가게에는 손님이 많다.

  That store has many customers.

  Here, '많다' is used to show a large presence of people in a specific location.