breath vs bodily function

breath and bodily function both are nouns.

Word	Noun	Adjective	Verb	Adverb
breath	Yes	No	No	No
bodily function	Yes	No	No	No

As nouns, bodily function is a hypernym of breath; that is, bodily function is a word with a broader meaning than breath:

Other hypernyms of breath include activity, bodily process, body process.

breath (noun)	bodily function (noun)
the process of taking in and expelling air during breathing	an organic process that takes place in the body
an indirect suggestion
a slight movement of the air
the air that is inhaled and exhaled in respiration
a short respite