apologist vs apology

apologist and apology both are nouns.

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

apologist (noun)	apology (noun)
a person who argues to defend or justify some policy or institution	a poor example
	an expression of regret at having caused trouble for someone
	a formal written defense of something you believe in strongly