dirty word vs bawdy

dirty word and bawdy both are nouns.

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

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

Other hyponyms of dirty word include bawdry, scatology.

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

dirty word (adjective)	bawdy (adjective)
	humorously vulgar