interplay vs interaction

interplay and interaction both are nouns.

Word	Noun	Adjective	Verb	Adverb
interplay	Yes	No	No	No
interaction	Yes	No	No	No

As nouns, interaction is a hypernym of interplay; that is, interaction is a word with a broader meaning than interplay:

interplay (noun)	interaction (noun)
reciprocal action and reaction	a mutual or reciprocal action; interacting
	(physics) the transfer of energy between elementary particles or between an elementary particle and a field or between fields; mediated by gauge bosons