confirm vs maintain

confirm and maintain both are verbs.

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

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

Other hyponyms of confirm include uphold, verify, corroborate, validate, reconfirm.

confirm (verb)	maintain (verb)
make more firm	stick to correctly or closely
establish or strengthen as with new evidence or facts	state categorically
strengthen or make more firm	state or assert
administer the rite of confirmation to	support against an opponent
support a person for a position	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