nervus trigeminus vs trigeminus

nervus trigeminus and trigeminus both are nouns.

Word	Noun	Adjective	Verb	Adverb
nervus trigeminus	Yes	No	No	No
trigeminus	Yes	No	No	No

As nouns, nervus trigeminus and trigeminus are synonyms defined as:

nervus trigeminus and trigeminus: the main sensory nerve of the face and motor nerve for the muscles of mastication

Other synonyms of nervus trigeminus include fifth cranial nerve, trigeminal, trigeminal nerve.

nervus trigeminus (noun)	trigeminus (noun)
the main sensory nerve of the face and motor nerve for the muscles of mastication	the main sensory nerve of the face and motor nerve for the muscles of mastication