foulness vs filth

foulness and filth both are nouns.

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

As nouns, foulness and filth are synonyms defined as:

foulness and filth: a state characterized by foul or disgusting dirt and refuse

Other synonyms of foulness include filthiness, nastiness.

foulness (noun)	filth (noun)
the attribute of having a strong offensive smell	an offensive or indecent word or phrase
(of weather) the badness of the weather	a state characterized by foul or disgusting dirt and refuse
a state characterized by foul or disgusting dirt and refuse	anything regarded as making something unclean
disgusting wickedness and immorality	any substance considered disgustingly foul or unpleasant