expelling vs bodily function

expelling and bodily function both are nouns.

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

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

expelling: any of several bodily processes by which substances go out of the body
bodily function: an organic process that takes place in the body

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

expelling (noun)	bodily function (noun)
any of several bodily processes by which substances go out of the body	an organic process that takes place in the body