bravery vs security

bravery and security both are nouns.

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

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

bravery (noun)	security (noun)
a quality of spirit that enables you to face danger or pain without showing fear	measures taken as a precaution against theft or espionage or sabotage etc.
feeling no fear	an electrical device that sets off an alarm when someone tries to break in
	a guarantee that an obligation will be met
	freedom from anxiety or fear
	a department responsible for the security of the institution's property and workers
	property that your creditor can claim in case you default on your obligation
	defense against financial failure; financial independence
	a formal declaration that documents a fact of relevance to finance and investment; the holder has a right to receive interest or dividends
	the state of being free from danger or injury