gulping vs unconditioned reflex

gulping and unconditioned reflex both are nouns.

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

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

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

gulping (noun)	unconditioned reflex (noun)
the drinking of large mouthfuls rapidly	an automatic instinctive unlearned reaction to a stimulus
a spasmodic reflex of the throat made as if in swallowing