Literature is any collection of written work, but it is also used more narrowly for writings specifically considered to be an art form, especially novels, plays, and poems. It includes both print and digital writing. In recent centuries, the definition has expanded to include oral literature, much of which has been transcribed. Literature is a method of recording, preserving, and transmitting knowledge and entertainment. It can also have a social, psychological, spiritual, or political role.
Literary criticism is one of the oldest academic disciplines, and is concerned with the literary merit or intellectual significance of specific texts. The study of books and other texts as artifacts or traditions is instead encompassed by textual criticism or the history of the book. "Literature", as an art form, is sometimes used synonymously with literary fiction, fiction written with the goal of artistic merit, but can also include works in various non-fiction genres, such as biography, diaries, memoirs, letters, and essays. Within this broader definition, literature includes non-fictional books, articles, or other written information on a particular subject.