mastication vs change of state

mastication and change of state both are nouns.

Word	Noun	Adjective	Verb	Adverb
mastication	Yes	No	No	No
change of state	Yes	No	No	No

As nouns, change of state is a hypernym of mastication; that is, change of state is a word with a broader meaning than mastication:

mastication: biting and grinding food in your mouth so it becomes soft enough to swallow
change of state: the act of changing something into something different in essential characteristics

mastication (noun)	change of state (noun)
biting and grinding food in your mouth so it becomes soft enough to swallow	the act of changing something into something different in essential characteristics