vindication vs alibi

vindication and alibi both are nouns.

Word	Noun	Adjective	Verb	Adverb
vindication	Yes	No	No	No
alibi	Yes	No	Yes	No

As nouns, alibi is a hyponym of vindication; that is, alibi is a word with a more specific, narrower meaning than vindication:

vindication: the justification for some act or belief
alibi: (law) a defense by an accused person purporting to show that he or she could not have committed the crime in question

Other hyponyms of vindication include apologia, apology, exculpation, excuse, self-justification.

vindication (noun)	alibi (noun)
the act of vindicating or defending against criticism or censure etc.	(law) a defense by an accused person purporting to show that he or she could not have committed the crime in question
the justification for some act or belief	a defense of some offensive behavior or some failure to keep a promise etc.

vindication (verb)	alibi (verb)
	exonerate by means of an alibi