security

(noun) the state of being free from danger or injury. Example: "We support the armed services in the name of national security."

(noun) defense against financial failure; financial independence. Synonyms: protection. Examples: "His pension gave him security in his old age." "Insurance provided protection against loss of wages due to illness."

(noun) freedom from anxiety or fear. Example: "The watch dog gave her a feeling of security."

(noun) a formal declaration that documents a fact of relevance to finance and investment; the holder has a right to receive interest or dividends. Synonyms: certificate. Example: "He held several valuable securities."

(noun) property that your creditor can claim in case you default on your obligation. Synonyms: surety. Example: "Bankers are reluctant to lend without good security."

(noun) a department responsible for the security of the institution's property and workers. Synonyms: security department. Example: "The head of security was a former policeman."

(noun) a guarantee that an obligation will be met. Synonyms: surety.

(noun) an electrical device that sets off an alarm when someone tries to break in. Synonyms: security system, security measure.

(noun) measures taken as a precaution against theft or espionage or sabotage etc.. Synonyms: security measures. Example: "Military security has been stepped up since the recent uprising."