eye blink vs blinking

eye blink and blinking both are nouns.

Word	Noun	Adjective	Verb	Adverb
eye blink	Yes	No	No	No
blinking	Yes	Yes	No	No

As nouns, eye blink and blinking are synonyms defined as:

Other synonyms of eye blink include blink, nictation, nictitation, wink, winking.

eye blink (noun)	blinking (noun)
a reflex that closes and opens the eyes rapidly	a reflex that closes and opens the eyes rapidly

eye blink (adjective)	blinking (adjective)
	closing the eyes intermittently and rapidly
	informal intensifiers