blink away vs keep back

blink away and keep back both are verbs.

Word	Noun	Adjective	Verb	Adverb
blink away	No	No	Yes	No
keep back	No	No	Yes	No

As verbs, keep back is a hypernym of blink away; that is, keep back is a word with a broader meaning than blink away:

Other hypernyms of blink away include hold back, keep, restrain.

blink away (verb)	keep back (verb)
keep back by blinking	prevent the action or expression of
	hold back; refuse to hand over or share
	secure and keep for possible future use or application