dirty word vs bawdry

dirty word and bawdry both are nouns.

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

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

Other hyponyms of dirty word include bawdy, scatology.

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