1. A couplet is 2 lines in a verse.
2. Exxagerated statement. (ex. When you're a bit hungry and you say I'm starving. You are exaggerating.)
3. idk this one but an example of imagery is He fumed and charged like an angry bull. it is comparing someone to something or it can be comparing something to someone.
4. An example of metaphor is She is fishing in troubled waters It is not used to mean that the person is actually fishing; it is an expression which is used to signify that the person is looking for something that is difficult to obtain.
5. (Each part of the song I am calling it a line.)Line 3 and line 1.