Can someone belp me word something better?! Please!?

Question

Can anyone give me more sophisticated/ more grown-up words for "grabber" and "zinger" ; a grabber is something you put at the beginning of your opening paragraph in a paper and the zinger is like your closing statement. Thanks!

Answer 1

An opening statement, and a conclusion.

Answer 2

spark and climax

Answer 3

A "hook" and a "knockout punch."