gag reflex vs reflex response

gag reflex and reflex response both are nouns.

Word	Noun	Adjective	Verb	Adverb
gag reflex	Yes	No	No	No
reflex response	Yes	No	No	No

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

gag reflex: normal reflex consisting of retching; may be produced by touching the soft palate in the back of the mouth
reflex response: an automatic instinctive unlearned reaction to a stimulus

gag reflex (noun)	reflex response (noun)
normal reflex consisting of retching; may be produced by touching the soft palate in the back of the mouth	an automatic instinctive unlearned reaction to a stimulus