Nonfiction books: These are books that are based on real facts, such as biographies, histories, and science books. They are written to inform and educate readers.
In addition to these two main categories, there are also many subcategories of books. Some common subcategories include:
* Children's books: These are books that are written for children of all ages. They may be fiction or nonfiction.
* Young adult books: These are books that are written for teenagers and young adults. They may be fiction or nonfiction.
* Reference books: These are books that provide information on a specific topic. They may be used for research or to find facts.
* Textbooks: These are books that are used for teaching a specific subject. They are usually nonfiction.
The way that books are classified in a library can vary from library to library. Some libraries use the Dewey Decimal System, while others use the Library of Congress Classification System. The Dewey Decimal System divides books into ten main categories, while the Library of Congress Classification System divides books into 21 main categories.