filth vs crappy

filth is a noun but crappy is not a noun.

Word	Noun	Adjective	Verb	Adverb
filth	Yes	No	No	No
crappy	No	Yes	No	No

filth (noun)	crappy (noun)
an offensive or indecent word or phrase
a state characterized by foul or disgusting dirt and refuse
anything regarded as making something unclean
any substance considered disgustingly foul or unpleasant

filth (adjective)	crappy (adjective)
	very bad