payroll vs pay

payroll and pay both are nouns.

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

payroll (noun)	pay (noun)
the department that determines the amounts of wage or salary due to each employee	something that remunerates
a list of employees and their salaries
the total amount of money paid in wages

payroll (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