obscenity vs fundament

obscenity and fundament both are nouns.

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

obscenity (noun)	fundament (noun)
an obscene act	lowest support of a structure
the trait of behaving in an obscene manner	the fleshy part of the human body that you sit on
an offensive or indecent word or phrase	the fundamental assumptions from which something is begun or developed or calculated or explained