sixth cranial nerve vs abducens

sixth cranial nerve and abducens both are nouns.

Word	Noun	Adjective	Verb	Adverb
sixth cranial nerve	Yes	No	No	No
abducens	Yes	No	No	No

As nouns, sixth cranial nerve and abducens are synonyms defined as:

sixth cranial nerve and abducens: a small motor nerve supplying the lateral rectus muscle of the eye

Other synonyms of sixth cranial nerve include abducens nerve, abducent, abducent nerve, nervus abducens.

sixth cranial nerve (noun)	abducens (noun)
a small motor nerve supplying the lateral rectus muscle of the eye	a small motor nerve supplying the lateral rectus muscle of the eye