nerve vs bravery

nerve and bravery both are nouns.

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

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

nerve: the courage to carry on
bravery: a quality of spirit that enables you to face danger or pain without showing fear

Other hypernyms of nerve include braveness, courage, courageousness.

nerve (noun)	bravery (noun)
the courage to carry on	a quality of spirit that enables you to face danger or pain without showing fear
impudent aggressiveness	feeling no fear
any bundle of nerve fibers running to various organs and tissues of the body

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