A book is a number of pieces of paper, usually with words printed on them, which are fastened together and fixed inside a cover of stronger paper or cardboard. Books contain information, stories, or poetry,
books are used for MANY reasons: Entertainment, religious purposes, studying, and more! Books are incredible, and they have taught us so much. To sum it up, the purpose of books back then were for religious purposes. Many sacred texts are used in religion.
Books are either fiction or non-fiction. Non-fiction books contain factual information, such as biographies and history books. Fiction books contain a story which was made up by the author, such as romance or children's books.
Biographies are examples of non-fiction works. Most biographies are non-fiction, but not all non-fiction works are biographies by any means. We say "most" biographies, because a biography of a fictional character is really a fictional book.
Journals such as The Diary of Anne Frank is also a journal, but it is a non-fiction journal.
Other examples of non-fiction books are "how to" books and travel books.
The most commonly read works are works of fiction. Fiction books are ones that have been made up. Perhaps some of their elements are based on hints of truth, but they have been elaborated, fabricated, and used to embellish into a new story.
Some examples of classic fiction books are The Sun Also Rises by Ernest Hemingway, To Kill A Mockingbird by Harper Lee, and Their Eyes Were Watching God by Zora Neale Hurston.