substantiation vs substantiate

substantiation is a noun but substantiate is not a noun.

Word	Noun	Adjective	Verb	Adverb
substantiation	Yes	No	No	No
substantiate	No	No	Yes	No

substantiation (noun)	substantiate (noun)
the act of validating; finding or testing the truth of something
additional proof that something that was believed (some fact or hypothesis or theory) is correct

substantiation (verb)	substantiate (verb)
	solidify, firm, or strengthen
	establish or strengthen as with new evidence or facts
	make real or concrete; give reality or substance to
	represent in bodily form