restrain vs blink

restrain is not a noun while blink is a noun.

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

As verbs, blink is a hyponym of restrain; that is, blink is a word with a more specific, narrower meaning than restrain:

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

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