facial vs nervus facialis

facial and nervus facialis both are nouns.

Word	Noun	Adjective	Verb	Adverb
facial	Yes	Yes	No	No
nervus facialis	Yes	No	No	No

As nouns, facial and nervus facialis are synonyms defined as:

Other synonyms of facial include facial nerve, seventh cranial nerve.

facial (noun)	nervus facialis (noun)
care for the face that usually involves cleansing and massage and the application of cosmetic creams	cranial nerve that supplies facial muscles
cranial nerve that supplies facial muscles

facial (adjective)	nervus facialis (adjective)
of or concerning the face
of or pertaining to the outside surface of an object