New York minute vs blink of an eye

New York minute and blink of an eye both are nouns.

Word	Noun	Adjective	Verb	Adverb
New York minute	Yes	No	No	No
blink of an eye	Yes	No	No	No

As nouns, New York minute and blink of an eye are synonyms defined as:

New York minute and blink of an eye: a very short time (as the time it takes the eye to blink or the heart to beat)

Other synonyms of New York minute include flash, heartbeat, instant, jiffy, split second, trice, twinkling, wink.

New York minute (noun)	blink of an eye (noun)
a very short time (as the time it takes the eye to blink or the heart to beat)	a very short time (as the time it takes the eye to blink or the heart to beat)