있어

있어

"있어" means "to have" or "to exist."

Here, '있어' is used to mean 'is located/exists' and denotes the presence of the object (the book) on a specific place (the desk).

책이 책상 위에 있어.

The book is on the desk.

In this sentence, '있어' again indicates location but for the subject (the speaker) instead of an object.

나는 친구랑 공원에 있어.

I am with a friend at the park.

Here, '있어' is used to express possession, meaning the speaker possesses or has time.

지금 시간이 좀 있어.

I have some time now.