startle vs innate reflex

startle and innate reflex both are nouns.

Word	Noun	Adjective	Verb	Adverb
startle	Yes	No	Yes	No
innate reflex	Yes	No	No	No

As nouns, innate reflex is a hypernym of startle; that is, innate reflex is a word with a broader meaning than startle:

startle (noun)	innate reflex (noun)
a sudden involuntary movement	an automatic instinctive unlearned reaction to a stimulus

startle (verb)	innate reflex (verb)
to stimulate to action
move or jump suddenly, as if in surprise or alarm