security vs protection

security and protection both are nouns.

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

As nouns, security and protection are synonyms defined as:

security and protection: defense against financial failure; financial independence

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

Other hyponyms of security include peace, public security, secureness, shelter.

security (noun)	protection (noun)
measures taken as a precaution against theft or espionage or sabotage etc.	the activity of protecting someone or something
an electrical device that sets off an alarm when someone tries to break in	payment extorted by gangsters on threat of violence
a guarantee that an obligation will be met	kindly endorsement and guidance
freedom from anxiety or fear	the imposition of duties or quotas on imports in order to protect domestic industry against foreign competition
a department responsible for the security of the institution's property and workers	a covering that is intend to protect from damage or injury
property that your creditor can claim in case you default on your obligation	defense against financial failure; financial independence
defense against financial failure; financial independence	the condition of being protected
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