This document provides an overview of film genres and subgenres, including their purposes and conventions. It defines key terms like genre, subgenre, hybrid, and conventions. Genres are categories that films can be grouped into, while subgenres combine elements of multiple genres. Conventions are generally accepted or familiar elements within a genre that audiences expect to see. The document uses examples like horror and disaster films to illustrate subgenres and how their conventions can evolve over time as audiences change. Students are assigned a group project to research a subgenre, identify examples, and present its conventions.