In English class Terrence learned that in some works of literature every element in the story has both a literal and a symbolic meaning. Which literary device did he learn about?

Terrence learned about allegory, a literary device where characters, events, and details in a story represent deeper meanings and abstract ideas beyond their literal interpretation. Allegories often convey moral, political, or social messages, allowing readers to explore complex themes through symbolic representation. A well-known example of allegory is George Orwell's "Animal Farm," where the farm and its inhabitants symbolize the events and figures of the Russian Revolution.