excuser vs excuse

excuser and excuse both are nouns.

Word	Noun	Adjective	Verb	Adverb
excuser	Yes	No	No	No
excuse	Yes	No	Yes	No

excuser (noun)	excuse (noun)
a person who pardons or forgives or excuses a fault or offense	a poor example
	a defense of some offensive behavior or some failure to keep a promise etc.
	a note explaining an absence

excuser (verb)	excuse (verb)
	accept an excuse for
	defend, explain, clear away, or make excuses for by reasoning
	excuse, overlook, or make allowances for; be lenient with
	serve as a reason or cause or justification of
	grant exemption or release to
	ask for permission to be released from an engagement