abducens nerve vs cranial nerve

abducens nerve and cranial nerve both are nouns.

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

As nouns, cranial nerve is a hypernym of abducens nerve; that is, cranial nerve is a word with a broader meaning than abducens nerve:

abducens nerve: a small motor nerve supplying the lateral rectus muscle of the eye
cranial nerve: any of the 12 paired nerves that originate in the brain stem

abducens nerve (noun)	cranial nerve (noun)
a small motor nerve supplying the lateral rectus muscle of the eye	any of the 12 paired nerves that originate in the brain stem