considerable vs substantial

considerable and substantial both are adjectives.

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

considerable (adjective)	substantial (adjective)
large or relatively large in number or amount or extent or degree	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