unashamed vs impenitent

unashamed and impenitent both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unashamed	No	Yes	No	No
impenitent	No	Yes	No	No

unashamed (adjective)	impenitent (adjective)
used of persons or their behavior; feeling no shame	not penitent or remorseful
	impervious to moral persuasion