blink vs restrain

blink is a noun but restrain is not a noun.

Word	Noun	Adjective	Verb	Adverb
blink	Yes	No	Yes	No
restrain	No	No	Yes	No

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

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

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

blink (verb)	restrain (verb)
briefly shut the eyes	prevent the action or expression of
keep back by blinking	to close within bounds, or otherwise limit or deprive of free movement
gleam or glow intermittently	restrict (someone or something) so as to make free movement difficult
	prevent (someone or something) from doing something