A genre of literature that presents facts and reality, including real people, places, objects, or events. Nonfiction encompasses a wide range of book genres and subject matters, such as biographies, history, self-help, science, and the arts. It includes books that are thoroughly researched and substantiated with evidence, providing readers with knowledge and detailed information. Nonfiction also extends to book reviews, where critical evaluations of these factual works are presented, contributing to the discourse in the fields they represent.