faucal vs fauces

faucal is not a noun while fauces is a noun.

Word	Noun	Adjective	Verb	Adverb
faucal	No	Yes	No	No
fauces	Yes	No	No	No

faucal (noun)	fauces (noun)
	the passage between the back of the mouth and the pharynx

faucal (adjective)	fauces (adjective)
of or relating to the fauces