Definitions: (noun) Security is the people and things that keep you safe. (noun) Security is safety.
Examples: (noun) After the bombing, the airport increased security. (noun) Since the attack, many people here have lost their feeling of security. (noun) Traditionally, Japanese workers had good job security, often having a job for life.
Synonyms: nouns: safety, protection. protection.
Academic Word List Sublist and Group: 2 A