vulgarism vs bawdry

vulgarism and bawdry both are nouns.

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

As nouns, bawdry is a hyponym of vulgarism; that is, bawdry is a word with a more specific, narrower meaning than vulgarism:

Other hyponyms of vulgarism include bawdy, scatology.

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