Moro reflex vs startle

Moro reflex and startle both are nouns.

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

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

Moro reflex: a normal reflex of young infants; a sudden loud noise causes the child to stretch out the arms and flex the legs
startle: a sudden involuntary movement

Other hypernyms of Moro reflex include jump, start.

Moro reflex (noun)	startle (noun)
a normal reflex of young infants; a sudden loud noise causes the child to stretch out the arms and flex the legs	a sudden involuntary movement

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