unjustifiable vs inexcusable

unjustifiable and inexcusable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unjustifiable	No	Yes	No	No
inexcusable	No	Yes	No	No

unjustifiable (adjective)	inexcusable (adjective)
incapable of being justified or explained	without excuse or justification
	not excusable