reciprocate vs reciprocation

reciprocate is not a noun while reciprocation is a noun.

Word	Noun	Adjective	Verb	Adverb
reciprocate	No	No	Yes	No
reciprocation	Yes	No	No	No

reciprocate (noun)	reciprocation (noun)
	the act of making or doing something in return
	alternating back-and-forth movement
	mutual interaction; the activity of reciprocating or exchanging (especially information)

reciprocate (verb)	reciprocation (verb)
alternate the direction of motion of
act, feel, or give mutually or in return