unconvertible vs irredeemable

unconvertible and irredeemable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unconvertible	No	Yes	No	No
irredeemable	No	Yes	No	No

unconvertible (adjective)	irredeemable (adjective)
used especially of currencies; incapable of being exchanged for or replaced by another currency of equal value	(of paper money) not convertible into coin at the pleasure of the holder
	insusceptible of reform