The document discusses three literary devices: simile, metaphor, and personification. A simile directly compares two things using "like" or "as", such as "as black as coal". A metaphor is a direct comparison without those words, such as describing men playing cards on a church roof as "playing patience, tile after tile". Personification gives human qualities to non-human things, such as saying "the wrinkled sea beneath him crawls". Examples of each are provided.