保安 | bǎo ān | to ensure public security / to ensure safety (for workers engaged in production) / public security / security guard | |
保全 | bǎo quán | to save from damage / to preserve / to maintain / to keep in good repair / (Tw) security guard | |
执勤 | zhí qín | to be on duty (of a security guard etc) | |
值守 | zhí shǒu | (of a security guard etc) to be on duty, keeping an eye on things / to keep watch | |
保全员 | bǎo quán yuán | (Tw) security guard |