sexual activity vs dirtiness

sexual activity and dirtiness both are nouns.

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

sexual activity (noun)	dirtiness (noun)
activities associated with sexual intercourse	obscenity in speech or writing
	the state of being unsanitary
	the state of containing dirty impurities