unvarnished vs unstained

unvarnished and unstained both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unvarnished	No	Yes	No	No
unstained	No	Yes	No	No

As adjectives, unvarnished and unstained are synonyms defined as:

unvarnished (adjective)	unstained (adjective)
free from any effort to soften to disguise	not stained
not having a coating of stain or varnish	without soil or spot or stain
	(of reputation) free from blemishes
	not having a coating of stain or varnish