infernal vs dirty word

infernal and dirty word both are nouns.

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

infernal (noun)	dirty word (noun)
an inhabitant of Hell	an offensive or indecent word or phrase
	a word that is considered to be unmentionable

infernal (adjective)	dirty word (adjective)
being of the underworld
characteristic of or resembling Hell
of or pertaining to or characteristic of a very uncontrolled and intense fire
expletives used informally as intensifiers
extremely evil or cruel; expressive of cruelty or befitting hell