breaking wind vs inborn reflex

breaking wind and inborn reflex both are nouns.

Word	Noun	Adjective	Verb	Adverb
breaking wind	Yes	No	No	No
inborn reflex	Yes	No	No	No

As nouns, inborn reflex is a hypernym of breaking wind; that is, inborn reflex is a word with a broader meaning than breaking wind:

breaking wind (noun)	inborn reflex (noun)
a reflex that expels intestinal gas through the anus	an automatic instinctive unlearned reaction to a stimulus