obscenity vs vulgarism

obscenity and vulgarism both are nouns.

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

As nouns, obscenity and vulgarism are synonyms defined as:

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

obscenity (noun)	vulgarism (noun)
an obscene act	the quality of lacking taste and refinement
the trait of behaving in an obscene manner	an offensive or indecent word or phrase
an offensive or indecent word or phrase