Hey Hamid, how are you? May I provide you with information on the difference between the words concerned? 1) ''Library'': a library is a building where books are kept that people can look at or borrow. E.g.: ''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. E.g.: ''I once stayed in one of his houses and saw his library.'' 2) ''Bookshop'': You should not 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. E.g.: ''I went into the bookshop to buy a present for my son.'' E.g.: ''My wife works in a bookstore.'' Hope that helps!!! :)