fasciculus vs nerve

fasciculus and nerve both are nouns.

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

As nouns, nerve is a hyponym of fasciculus; that is, nerve is a word with a more specific, narrower meaning than fasciculus:

fasciculus: a bundle of fibers (especially nerve fibers)
nerve: any bundle of nerve fibers running to various organs and tissues of the body

Other hyponyms of fasciculus include fornix, trigonum cerebrale, nervus.

fasciculus (noun)	nerve (noun)
a bundle of fibers (especially nerve fibers)	the courage to carry on
	impudent aggressiveness
	any bundle of nerve fibers running to various organs and tissues of the body

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