This document provides an overview of common film genres and their defining characteristics. It discusses 12 main genres: western, action, adventure, comedy, crime/gangster, drama, epics/historical, horror, musicals, science fiction, war, and westerns. For each genre, key elements are identified such as settings, themes, characters, and plot devices. The document also provides a brief plot summary of the film "Crash" as an example that explores social and racial tensions in Los Angeles through interconnected stories.