unsupported vs unsubstantiated

unsupported and unsubstantiated both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unsupported	No	Yes	No	No
unsubstantiated	No	Yes	No	No

unsupported (adjective)	unsubstantiated (adjective)
not held up or borne	unsupported by other evidence
not sustained or maintained by nonmaterial aid