double time vs pay

double time and pay both are nouns.

Word	Noun	Adjective	Verb	Adverb
double time	Yes	No	No	Yes
pay	Yes	No	Yes	No

As nouns, pay is a hypernym of double time; that is, pay is a word with a broader meaning than double time:

Other hypernyms of double time include earnings, remuneration, salary, wage.

double time (noun)	pay (noun)
a doubled wage (for working overtime)	something that remunerates
a fast marching pace (180 steps/min) or slow jog

double time (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

double time (adverb)	pay (adverb)
at a faster speed