Fiction means literature created from the imagination. They are written to entertain readers. Mysteries, romance, science fiction, fantasy, chick lit, and crime thrillers are all fiction genres. And nonfiction means literature based on facts; it refers to the broadest category. The purpose of writing nonfiction is to give more knowledge to the readers. Nonfiction includes argumentative, functional, expository, and opinion pieces. Writing nonfiction books is also based on essays on art or literature, memoirs, journalism, scientific, biographies, technical, or can be in Ghostwriting services. The examples of fiction and nonfiction show that there are many categories in which you can write, and you have many options.