Poems have a certain form like stanzas or lines and use rhythm, rhyme, and figurative language. Dramas tell stories through action and dialogue. Letters have a heading, greeting, body, closing, and signature. Ads must be persuasive to change beliefs and often use imagery. Historical fiction blends facts with fiction to study history through stories. Biographies are about a person written by an author. Autobiographies are written by the person about their own life.