burping vs instinctive reflex

burping and instinctive reflex both are nouns.

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

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

burping: a reflex that expels gas noisily from the stomach through the mouth
instinctive reflex: an automatic instinctive unlearned reaction to a stimulus

burping (noun)	instinctive reflex (noun)
a reflex that expels gas noisily from the stomach through the mouth	an automatic instinctive unlearned reaction to a stimulus