payment vs pay

payment and pay both are nouns.

Word	Noun	Adjective	Verb	Adverb
payment	Yes	No	No	No
pay	Yes	No	Yes	No

payment (noun)	pay (noun)
the act of paying money	something that remunerates
an act of requiting; returning in kind
a sum of money paid or a claim discharged

payment (verb)	pay (verb)
	dedicate
	bear (a cost or penalty), in recompense for some action
	convey, as of a compliment, regards, attention, etc.; bestow
	give money, usually in exchange for goods or services
	bring in
	do or give something to somebody in return
	cancel or discharge a debt
	make a compensation for
	discharge or settle
	render
	be worth it