D.Epithets
Words that connect words or phrases are called conjunctions.
meaningless
When a sentence consists of two phrases that have the same length, they are called balanced phrases. Hope this helpful :)
Neologisms
acronym
Who are you? Who lives there? Who did that? Who called you?
Tautology
Phrases unique to a particular language are called idioms. These expressions often have a figurative meaning that is different from the literal translation of the words used.
I believe that you are referring to what is called chiasmus, an inversion in the second of two parallel phrases.
Point of imitation
Echolalia
acrostic