maintain vs justify

maintain and justify both are verbs.

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

As verbs, justify is a hyponym of maintain; that is, justify is a word with a more specific, narrower meaning than maintain:

Other hyponyms of maintain include vindicate.

maintain (verb)	justify (verb)
stick to correctly or closely	adjust the spaces between words
state categorically	show to be right by providing justification or proof
state or assert	(used of God) declare innocent; absolve from the penalty of sin
support against an opponent
maintain by writing regular records
supply with necessities and support
keep in safety and protect from harm, decay, loss, or destruction
have and exercise
maintain for use and service
cause to continue in a certain state, position, or activity