eructation vs innate reflex

eructation and innate reflex both are nouns.

Word	Noun	Adjective	Verb	Adverb
eructation	Yes	No	No	No
innate reflex	Yes	No	No	No

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

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

eructation (noun)	innate reflex (noun)
a reflex that expels gas noisily from the stomach through the mouth	an automatic instinctive unlearned reaction to a stimulus
(of volcanoes) pouring out fumes or lava (or a deposit so formed)