Books: Generally speaking, it refers to works that record all kinds of knowledge on certain materials with symbols such as words and pictures, clearly express ideas and make books. It is an important tool to spread all kinds of knowledge and ideas and accumulate human culture.

The "I" in the sentence only borrowed two books, which should not be books.

So: I borrowed two books from the library.

Correctly speaking, it should be possible to get rid of the "book"!