Genre refers to a type or category of media works that share similar characteristics. A genre like horror contains subgenres, such as psychological thrillers. Genres allow audiences to understand conventions and predict plotlines, providing pleasure. Horror films often rely on suspension of disbelief and portraying mental illness in a believable way to elicit fear. Common horror conventions include using myths, monsters, and settings like forests to act as metaphors for death. Psychological thrillers conventionally focus on characters struggling with an unstable mental state and determining what is real.