payment vs getting even

payment and getting even both are nouns.

Word	Noun	Adjective	Verb	Adverb
payment	Yes	No	No	No
getting even	Yes	No	No	No

As nouns, getting even is a hypernym of payment; that is, getting even is a word with a broader meaning than payment:

Other hypernyms of payment include paying back, return.

payment (noun)	getting even (noun)
the act of paying money	a reciprocal group action
an act of requiting; returning in kind
a sum of money paid or a claim discharged