blink vs blinker

blink and blinker both are nouns.

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

blink (noun)	blinker (noun)
a reflex that closes and opens the eyes rapidly	a light that flashes on and off; used as a signal or to send messages
	blind consisting of a leather eyepatch sewn to the side of the halter that prevents a horse from seeing something on either side
	a blinking light on a motor vehicle that indicates the direction in which the vehicle is about to turn

blink (verb)	blinker (verb)
briefly shut the eyes	put blinders on (a horse)
keep back by blinking
gleam or glow intermittently