blink vs twinkle

blink and twinkle both are nouns.

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

As verbs, blink and twinkle are synonyms defined as:

Other synonyms of blink include flash, wink, winkle.

blink (noun)	twinkle (noun)
a reflex that closes and opens the eyes rapidly	merriment expressed by a brightness or gleam or animation of countenance
	a rapid change in brightness; a brief spark or flash

blink (verb)	twinkle (verb)
briefly shut the eyes	gleam or glow intermittently
keep back by blinking	emit or reflect light in a flickering manner
gleam or glow intermittently