sexual activity vs raunchy

sexual activity is a noun but raunchy is not a noun.

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

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

sexual activity (adjective)	raunchy (adjective)
	thickly covered with ingrained dirt or soot
	suggestive of or tending to moral looseness
	earthy and sexually explicit