dirty word vs fundament

dirty word and fundament both are nouns.

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

dirty word (noun)	fundament (noun)
an offensive or indecent word or phrase	lowest support of a structure
a word that is considered to be unmentionable	the fleshy part of the human body that you sit on
	the fundamental assumptions from which something is begun or developed or calculated or explained