filth vs dirtiness

filth and dirtiness both are nouns.

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

As nouns, dirtiness is a hypernym of filth; that is, dirtiness is a word with a broader meaning than filth:

Other hypernyms of filth include uncleanness.

filth (noun)	dirtiness (noun)
an offensive or indecent word or phrase	obscenity in speech or writing
a state characterized by foul or disgusting dirt and refuse	the state of being unsanitary
anything regarded as making something unclean	the state of containing dirty impurities
any substance considered disgustingly foul or unpleasant