This document discusses the concept of genre in media. It begins by defining genre as a type of media work governed by implicit rules shared by its creators and audience. Genre comes from the French word for "type" or "kind." Works are classified by genre by their creators, marketers, reviewers, and consumers. Genre studies examines common structural elements and patterns in collections of stories. Conventions distinguish genres, like settings and characters in westerns. Genres develop over time through a lifecycle as audiences and creators establish expectations. They allow audiences to understand new works and creators to rely on familiar tropes.