bawdry vs dirty word

bawdry and dirty word both are nouns.

Word	Noun	Adjective	Verb	Adverb
bawdry	Yes	No	No	No
dirty word	Yes	No	No	No

As nouns, dirty word is a hypernym of bawdry; that is, dirty word is a word with a broader meaning than bawdry:

Other hypernyms of bawdry include filth, obscenity, smut, vulgarism.

bawdry (noun)	dirty word (noun)
lewd or obscene talk or writing	an offensive or indecent word or phrase
	a word that is considered to be unmentionable