The document defines and explains key media concepts: - Media language involves encoding and decoding messages between a source and receiver using established language rules and codes. - Media institutions arrange, create, distribute, and influence media products that are delivered to mass audiences. - Genres are categories of art or entertainment defined by stylistic conventions that change over time with new genres and discontinued old ones. - Media representations serve to create new realities by portraying groups, ideas, and topics from ideological perspectives rather than just reflecting reality. - Audiences are abstract concepts comprising individuals measured collectively who experience and consume media texts.