eye blink vs instinctive reflex

eye blink and instinctive reflex both are nouns.

Word	Noun	Adjective	Verb	Adverb
eye blink	Yes	No	No	No
instinctive reflex	Yes	No	No	No

As nouns, instinctive reflex is a hypernym of eye blink; that is, instinctive reflex is a word with a broader meaning than eye blink:

eye blink: a reflex that closes and opens the eyes rapidly
instinctive reflex: an automatic instinctive unlearned reaction to a stimulus

eye blink (noun)	instinctive reflex (noun)
a reflex that closes and opens the eyes rapidly	an automatic instinctive unlearned reaction to a stimulus