Genre fiction, also known as popular fiction, is a term used in the book-trade for fictional works written with the intent of fitting into a specific literary genre, in order to appeal to readers and fans already familiar with that genre. The main genres are crime, fantasy, romance, science fiction, western, inspirational, historical fiction and horror. Genre fiction is generally distinguished from literary fiction and mainly read for entertainment or to escape from reality. Literary Fiction on the contrary provides a means to better understand the reality of the world and to delivers an emotional response.