The purpose of exposition (or expository writing) is not primarily to amuse, but to enlighten and instruct. The objective is to explain and analyze information by presenting an idea, relevant evidence, and appropriate discussion. Its essential quality is clarity.
I think it’s usually Exposution, rising action, climax, falling action, and resolution- I only know five but the other two you can look up Or somethinf
A letter of the alphabet that’s different from the others, in form of height and how it looks. (If that’s what you meant)