불가산 (물리적, 정신적, 경제적) 안도감, 안심; 안전, 안전 보장, 안보 (The condition of not being threatened, especially physically, psychologically, emotionally, or financially.)
(큰 기업・조직의) 경비 담당 부서 (An organization or department responsible for providing security by enforcing laws, rules, and regulations as well as maintaining order. )
There is a security guard on duty 24 hours a day. ― Do all the visitors have to sign in? 경비원이 24시간 근무하고 있을 겁니다. ― 모든 방문객들이 들어갈 때 서명을 해야 하나요?