reciprocation vs getting even

reciprocation and getting even both are nouns.

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

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

Other hypernyms of reciprocation include paying back, return.

reciprocation (noun)	getting even (noun)
the act of making or doing something in return	a reciprocal group action
alternating back-and-forth movement
mutual interaction; the activity of reciprocating or exchanging (especially information)