This document lists numerous elements that commonly appear in horror genre films, including plots, icons, backgrounds, themes, characters, and specific scenes involving violence, paranormal activity, relationships, and supernatural events. It then discusses Burton's theory of genre codes and conventions, noting that horror films successfully balance repetition of familiar elements with variation to engage audiences familiar with the genre's typical features. Key elements like weapons, isolated settings, and specific plot points are regularly repeated across horror movies according to Burton's theory.