gag reflex vs reflex

gag reflex and reflex both are nouns.

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

As nouns, reflex is a hypernym of gag reflex; that is, reflex 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: an automatic instinctive unlearned reaction to a stimulus

gag reflex (noun)	reflex (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

gag reflex (adjective)	reflex (adjective)
	without volition or conscious control