goddamn vs dirty word

goddamn is not a noun while dirty word is a noun.

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

goddamn (noun)	dirty word (noun)
	an offensive or indecent word or phrase
	a word that is considered to be unmentionable

goddamn (adjective)	dirty word (adjective)
used as expletives
expletives used informally as intensifiers

goddamn (adverb)	dirty word (adverb)
expressing anger, despair, frustration, approval, or surprise