mastication vs manduction

mastication and manduction both are nouns.

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

As nouns, mastication and manduction are synonyms defined as:

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

Other synonyms of mastication include chew, chewing.

mastication (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