vindication vs apology

vindication and apology both are nouns.

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

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

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

vindication (noun)	apology (noun)
the act of vindicating or defending against criticism or censure etc.	a poor example
the justification for some act or belief	an expression of regret at having caused trouble for someone
	a formal written defense of something you believe in strongly