unacceptable vs unendurable

unacceptable and unendurable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unacceptable	No	Yes	No	No
unendurable	No	Yes	No	No

unacceptable (adjective)	unendurable (adjective)
not acceptable; not welcome	incapable of being tolerated or endured
(used of persons or their behavior) not acceptable or reasonable
not conforming to standard usage
not adequate to give satisfaction