This document discusses the codes and conventions of four common film genres: horror, comedy, action, and romance. It provides descriptions of typical elements for each genre, such as characters, settings, scenarios, use of music, and resolutions. For horror films, it notes they often feature isolated characters, surprise scares using music, and stereotypical roles. Comedies typically have nerdy main characters, love interests, stupid humor, and advice from wise characters. Action films usually involve heroes versus villains, missions with weapons, chase scenes, and sacrifices of loved ones. Romances usually follow the meeting and separation then reuniting of couples, contain emotional backstories, and end with marriage.