sexual practice vs filthy

sexual practice is a noun but filthy is not a noun.

Word	Noun	Adjective	Verb	Adverb
sexual practice	Yes	No	No	No
filthy	No	Yes	No	No

sexual practice (noun)	filthy (noun)
activities associated with sexual intercourse

sexual practice (adjective)	filthy (adjective)
	disgustingly dirty; filled or smeared with offensive matter
	characterized by obscenity
	vile; despicable