cranial nerve vs nerve

cranial nerve and nerve both are nouns.

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

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

cranial nerve: any of the 12 paired nerves that originate in the brain stem
nerve: any bundle of nerve fibers running to various organs and tissues of the body

Other hypernyms of cranial nerve include nervus.

cranial nerve (noun)	nerve (noun)
any of the 12 paired nerves that originate in the brain stem	the courage to carry on
	impudent aggressiveness
	any bundle of nerve fibers running to various organs and tissues of the body

cranial nerve (verb)	nerve (verb)
	get ready for something difficult or unpleasant