This is the 1st most frequent Korean word.
있다
"있다" means "to exist" or "to have."
Here, '있다' indicates possession, meaning 'to have' or 'to own'.
나는 책이 있다.
I have a book.
In this sentence, '있다' expresses existence, meaning 'to be' or 'to exist' in a specific location.
거기에 사람이 있다.
There is a person there.
Here, '있다' shows state or condition, describing that something is in a particular state or situation, like 'to be' in language.