Nonfiction is a genre of writing that presents factual information about real events, people, or concepts. It aims to inform, educate, or explain rather than entertain. Common forms of nonfiction include biographies, essays, journalism, and documentaries. In nonfiction, the content is based on research and evidence, making it reliable for readers seeking knowledge. Topics can range from history and science to self-help and travel. Unlike fiction, which involves imaginative storytelling, nonfiction focuses on truth and accuracy.