security vs confidence

security and confidence both are nouns.

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

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

security (noun)	confidence (noun)
measures taken as a precaution against theft or espionage or sabotage etc.	freedom from doubt; belief in yourself and your abilities
an electrical device that sets off an alarm when someone tries to break in	a secret that is confided or entrusted to another
a guarantee that an obligation will be met	a feeling of trust (in someone or something)
freedom from anxiety or fear	a state of confident hopefulness that events will be favorable
a department responsible for the security of the institution's property and workers	a trustful relationship
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