sexual activity vs dissolution

sexual activity and dissolution both are nouns.

Word	Noun	Adjective	Verb	Adverb
sexual activity	Yes	No	No	No
dissolution	Yes	No	No	No

sexual activity (noun)	dissolution (noun)
activities associated with sexual intercourse	the termination or disintegration of a relationship (between persons or nations)
	the termination of a meeting
	dissolute indulgence in sensual pleasure
	separation into component parts
	the process of going into solution