This document defines and describes various genres of literature. It begins by explaining that a genre is a category or kind of story, and that stories fall into either fiction or non-fiction. It then provides definitions and key characteristics for several specific genres, including action/adventure, crime/detective/mystery, fantasy, horror, romance, science fiction, western, children's/young adult, experimental, and literary versus popular fiction. Examples are given for many genres to illustrate common elements such as plots, characters, settings, and themes.