justification vs justify

justification is a noun but justify is not a noun.

Word	Noun	Adjective	Verb	Adverb
justification	Yes	No	No	No
justify	No	No	Yes	No

justification (noun)	justify (noun)
the act of defending or explaining or making excuses for by reasoning
something (such as a fact or circumstance) that shows an action to be reasonable or necessary
a statement in explanation of some action or belief

justification (verb)	justify (verb)
	adjust the spaces between words
	show to be right by providing justification or proof
	(used of God) declare innocent; absolve from the penalty of sin