Final answer:
Repetition is a literary device used to emphasize, create rhythm, or connect with the reader, seen in works like 'The Great Gatsby' and Martin Luther King Jr.'s speeches. Stichomythia is a technique used in Greek tragedies for rapid and tense exchanges between two characters, heightening drama and urgency.
Step-by-step explanation:
Repetition and stichomythia are both dramatic devices used in literature to enhance the impact of the work. Repetition involves using a word, phrase, or structure more than once to emphasize a point, create rhythm, or forge a connection with the reader. A notable example of repetition can be found in Martin Luther King Jr.'s speech where the phrase "I have a dream" is used as a powerful refrain to underscore the theme of the speech. Repetition can also be seen in literature, such as with the green light symbol in F. Scott Fitzgerald's The Great Gatsby, where it is mentioned multiple times throughout the novel to symbolize Gatsby's aspirations.
Stichomythia is a technique often used in classical Greek tragedy, where two characters engage in a rapid-fire exchange of single, tense lines of verse. This back-and-forth, often found in the works of Sophocles and Aeschylus, heightens the drama and creates a sense of urgency and conflict between the characters. It's a device that serves to increase the emotional intensity of a scene and to showcase the characters' wit or eloquence.