chewing vs manduction

chewing and manduction both are nouns.

Word	Noun	Adjective	Verb	Adverb
chewing	Yes	No	No	No
manduction	Yes	No	No	No

As nouns, chewing and manduction are synonyms defined as:

chewing and manduction: biting and grinding food in your mouth so it becomes soft enough to swallow

Other synonyms of chewing include chew, mastication.

chewing (noun)	manduction (noun)
biting and grinding food in your mouth so it becomes soft enough to swallow	biting and grinding food in your mouth so it becomes soft enough to swallow
	the act of participating in the celebration of the Eucharist