pledger vs pledge

pledger and pledge both are nouns.

Word	Noun	Adjective	Verb	Adverb
pledger	Yes	No	No	No
pledge	Yes	No	Yes	No

pledger (noun)	pledge (noun)
someone who makes or gives a pledge	a binding commitment to do or give or refrain from something
	a drink in honor of or to the health of a person or event
	someone accepted for membership but not yet fully admitted to the group
	a deposit of personal property as security for a debt

pledger (verb)	pledge (verb)
	promise solemnly and formally
	bind or secure by a pledge
	give as a guarantee
	propose a toast to
	pay (an amount of money) as a contribution to a charity or service, especially at regular intervals