peristalsis vs bodily function

peristalsis and bodily function both are nouns.

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

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

peristalsis: the process of wavelike muscle contractions of the alimentary tract that moves food along
bodily function: an organic process that takes place in the body

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

peristalsis (noun)	bodily function (noun)
the process of wavelike muscle contractions of the alimentary tract that moves food along	an organic process that takes place in the body