excretion vs fundament

excretion and fundament both are nouns.

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

excretion (noun)	fundament (noun)
the bodily process of discharging waste matter	lowest support of a structure
waste matter (as urine or sweat but especially feces) discharged from the body	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