capricious vs sexual activity

capricious is not a noun while sexual activity is a noun.

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

capricious (noun)	sexual activity (noun)
	activities associated with sexual intercourse

capricious (adjective)	sexual activity (adjective)
determined by chance or impulse or whim rather than by necessity or reason
changeable