ingestion vs bodily process

ingestion and bodily process both are nouns.

Word	Noun	Adjective	Verb	Adverb
ingestion	Yes	No	No	No
bodily process	Yes	No	No	No

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

ingestion: the process of taking food into the body through the mouth (as by eating)
bodily process: an organic process that takes place in the body

Other hypernyms of ingestion include activity, bodily function, body process.

ingestion (noun)	bodily process (noun)
the process of taking food into the body through the mouth (as by eating)	an organic process that takes place in the body