vulgarism vs fundament

vulgarism and fundament both are nouns.

Word	Noun	Adjective	Verb	Adverb
vulgarism	Yes	No	No	No
fundament	Yes	No	No	No

vulgarism (noun)	fundament (noun)
the quality of lacking taste and refinement	lowest support of a structure
an offensive or indecent word or phrase	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