filthy vs sexual practice

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

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

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

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