This document provides an overview of the differences between fiction and nonfiction books. It explains that fiction books tell made-up stories that are not real and aim to entertain readers, while nonfiction books contain true information, facts, and explanations about real topics or events. A few examples are provided to illustrate this, such as a story about making friends with a unicorn being fiction because unicorns are imaginary, while a book about how a farmer milks a cow would be nonfiction since it teaches factual information. In the end, key differences between fiction and nonfiction are recapped.