wealthy vs substantial

wealthy and substantial both are adjectives.

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

As adjectives, wealthy and substantial are synonyms defined as:

wealthy and substantial: having an abundant supply of money or possessions of value

Other synonyms of wealthy include affluent, flush, loaded, moneyed.

wealthy (adjective)	substantial (adjective)
having an abundant supply of money or possessions of value	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