irredeemable vs unexchangeable

irredeemable and unexchangeable both are adjectives.

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

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