gulp vs unconditioned reflex

gulp and unconditioned reflex both are nouns.

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

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

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

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