bawdy vs vulgarism

bawdy and vulgarism both are nouns.

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

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

Other hypernyms of bawdy include dirty word, filth, obscenity, smut.

bawdy (noun)	vulgarism (noun)
lewd or obscene talk or writing	the quality of lacking taste and refinement
	an offensive or indecent word or phrase

bawdy (adjective)	vulgarism (adjective)
humorously vulgar