substantially vs substantial

substantially is not an adjective while substantial is an adjective.

Word	Noun	Adjective	Verb	Adverb
substantially	No	No	No	Yes
substantial	No	Yes	No	No

substantially (adjective)	substantial (adjective)
	having substance or capable of being treated as fact; not imaginary
	of considerable importance, size, or worth
	of or relating to the real nature or essential elements of something
	having an abundant supply of money or possessions of value
	of good quality and condition; solidly built
	providing abundant nourishment

substantially (adverb)	substantial (adverb)
to a great extent or degree
in a strong substantial way