gulp vs instinctive reflex

gulp and instinctive reflex both are nouns.

Word	Noun	Adjective	Verb	Adverb
gulp	Yes	No	Yes	No
instinctive reflex	Yes	No	No	No

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

gulp: a spasmodic reflex of the throat made as if in swallowing
instinctive reflex: an automatic instinctive unlearned reaction to a stimulus

gulp (noun)	instinctive reflex (noun)
a large and hurried swallow	an automatic instinctive unlearned reaction to a stimulus
a spasmodic reflex of the throat made as if in swallowing

gulp (verb)	instinctive reflex (verb)
utter or make a noise, as when swallowing too quickly
to swallow hurriedly or greedily or in one draught