stern vs dirty word

stern and dirty word both are nouns.

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

stern (noun)	dirty word (noun)
the rear part of a ship	an offensive or indecent word or phrase
the fleshy part of the human body that you sit on	a word that is considered to be unmentionable

stern (adjective)	dirty word (adjective)
severe and unremitting in making demands
not to be placated or appeased or moved by entreaty
of a stern or strict bearing or demeanor; forbidding in aspect
severely simple