1. Catharsis: Catharsis is the emotional arouse which makes pity and fear to the audiences after watching the end of tragedy.
2. Dramatic Monologue: A speech delivered when a character is either alone or isolated on the stage. In dramatic monologue or soliloquy, the character freely gives vent to his feelings. The audience overhears the character talking himself or herself. The Monologues could be private as well as public.
3. Character: A person in a literary work. Any person in a play is considered as a character.
4. Characterization: Characterization is the method by which an author creates the appearance and personality of imagery persons and reveals their characters.
5. Chorus: A group of person who give much information to decorate and enlarge the act but they are not the character of the act. They make bridge among the past, present and future condition of the act and inform the audience.
6. One act play: A play in one act, presenting a simple incident involving two or three characters and running for fifty to forty minutes. For example; John Millington Sing’s Riders to the sea is a one act play.