A book is a collection of written, printed, or illustrated pages bound together. It serves as a medium for conveying information, stories, or ideas. Books can be found in various genres, including fiction, non-fiction, poetry, and reference. They are typically made of paper, but digital formats, such as e-books, have become increasingly popular. Books are often organized into chapters and sections, making it easier for readers to navigate the content. They can be used for education, entertainment, or research. Notable examples of books include classics like Pride and Prejudice by Jane Austen and 1984 by George Orwell.