A collection of literary works that primarily involve the artistic arrangement of words to express emotions or ideas, often in rhythmic or metrical form. This category also expands to include nonfiction philosophy books which explore fundamental questions about existence, reality, and life through reasoned argumentation, non-fiction drama books that present real-life events or stories in a dramatic format, and history books which provide a factual and comprehensive account of past events. As a part of the non-fiction genre, these books are based on facts, real events, and real people, such as biography or history.