This document discusses key literary terms: the three unities, tragedy, and chorus. It provides details on each:
1) The three unities refer to Aristotle's concept of unity of action, place, and time. Later critics added the unities of place and time. While important in some traditions, English plays by Marlowe, Shakespeare, and Jonson did not strictly follow the unities.
2) Aristotle defined tragedy as imitating an action that is serious and complete, evoking pity and fear to bring catharsis. A tragic hero is neither thoroughly good nor bad, and makes an error leading to a change in fortune.
3) In Greek theater, the chorus commented on the action