security

adj. pertaining to safety

n. safety; protection, defense; act of making safe; pledge, guarantee; stock, bond; freedom from danger; serenity, tranquility

Security is the condition of being protected against danger or loss. In the general sense, security is a concept similar to safety. The nuance between the two is an added emphasis on being protected from dangers that originate from outside. Individuals or actions that encroach upon the condition of protection are responsible for the breach of security.
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The Computing Technology Industry Association (CompTIA) is a non-profit trade association, was created in 1982 as the Association of Better Computer Dealers, Inc. (ABCD) by representatives of five microcomputer dealerships. Over the course of a decade, ABCD laid the groundwork for many of CompTIA’s initiatives and member benefits.
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Noun
1. the state of being free from danger or injury; "we support the armed services in the name of national security"
(antonym) insecurity
(hypernym) safety
(hyponym) peace, public security
2. a formal declaration that documents a fact of relevance to finance and investment; the holder has a right to receive interest or dividends; "he held several valuable securities"
(synonym) certificate
(hypernym) legal document, legal instrument, official document, instrument
(hyponym) government security, agency security
3. a department responsible for the security of the institution's property and workers; "the head of security was a former policeman"
(synonym) security department
(hypernym) department, section
4. measures taken as a precaution against theft or espionage or sabotage etc.; "military security has been stepped up since the recent uprising"
(synonym) security measures
(hypernym) precaution, safeguard, guard
5. defense against financial failure; financial independence; "his pension gave him security in his old age"; "insurance provided protection against loss of wages due to illness"
(synonym) protection
(hypernym) assets
(hyponym) easy street
6. freedom from anxiety or fear; "the watch dog gave her a feeling of security"
(hypernym) fearlessness, bravery
(hyponym) confidence
7. an electrical device that sets off an alarm when someone tries to break in
(synonym) security system, security measures
(hypernym) electrical device
8. property that your creditor can claim in case you default on your obligation; "bankers are reluctant to lend without good security"
(synonym) surety
(hypernym) transferred property, transferred possession
(hyponym) deposit
9. a guarantee that an obligation will be met
(synonym) surety
(hypernym) guarantee, warrant, warrantee, warranty

(n.)
The condition or quality of being secure; secureness.
  

(n.)
That which secures or makes safe; protection; guard; defense.
  

(n.)
Something given, deposited, or pledged, to make certain the fulfillment of an obligation, the performance of a contract, the payment of a debt, or the like; surety; pledge.
  

(n.)
One who becomes surety for another, or engages himself for the performance of another's obligation.
  

(n.)
Hence, carelessness; negligence; heedlessness.
  

(n.)
Freedom from risk; safety.
  

(n.)
Freedom from apprehension, anxiety, or care; confidence of power of safety; hence, assurance; certainty.
  

(n.)
An evidence of debt or of property, as a bond, a certificate of stock, etc.; as, government securities.
  

1. A condition that results from the establishment and maintenance of protective measures that ensure a state of inviolability from hostile acts or influences. [JP1] 2. With respect to classified matter, the condition that prevents unauthorized persons from having access to official information that is safeguarded in the interests of national security. [After JP1] 3. Measures taken by a military unit, an activity or installation to protect itself against all acts designed to, or which may, impair its effectiveness. [JP1]