deglutition vs ingestion

deglutition and ingestion both are nouns.

Word	Noun	Adjective	Verb	Adverb
deglutition	Yes	No	No	No
ingestion	Yes	No	No	No

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

deglutition: the act of swallowing
ingestion: the process of taking food into the body through the mouth (as by eating)

Other hypernyms of deglutition include consumption, intake, uptake.

deglutition (noun)	ingestion (noun)
the act of swallowing	the process of taking food into the body through the mouth (as by eating)