Genre theory proposes that genres are defined by shared conventions of content, themes, and stylistic elements. Generic conventions refer to common narrative structures, character types, visual elements, and themes seen across films within a genre, such as action sequences and fights in action films. Identifying conventions involves analyzing typical narratives, micro-level details, and themes. While genres provide familiar frameworks that audiences enjoy, over-reliance on conventions can make films repetitive; some challenge expectations to keep genres fresh. Categorizing films by genre aids marketing but risks pigeonholing creativity.