filth vs obscenity

filth and obscenity both are nouns.

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

As nouns, filth and obscenity are synonyms defined as:

Other synonyms of filth include dirty word, smut, vulgarism.

filth (noun)	obscenity (noun)
an offensive or indecent word or phrase	an obscene act
a state characterized by foul or disgusting dirt and refuse	the trait of behaving in an obscene manner
anything regarded as making something unclean	an offensive or indecent word or phrase
any substance considered disgustingly foul or unpleasant