library - bookshop
A library is a building where books are kept that people can look at or borrow.
You can borrow the book from your local library.
A library is also a private collection of books, or a room in a large house where books are kept.
I once stayed in one of his houses and saw his library.
Don't refer to a shop where you can buy books as a ‘library’. In Britain, a shop like this is called a bookshop. In America, it is called a bookstore.
I went into the bookshop to buy a present for my son.
My wife works in a bookstore.