vulgarism vs profanity

vulgarism and profanity both are nouns.

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

As nouns, profanity is a hypernym of vulgarism; that is, profanity is a word with a broader meaning than vulgarism:

vulgarism (noun)	profanity (noun)
the quality of lacking taste and refinement	vulgar or irreverent speech or action
an offensive or indecent word or phrase