1.
security, safety, public order
The maintenance of safety and security, especially in public facilities, transportation, and workplaces. Often refers to the systems and personnel responsible for keeping places safe.
空港の保安検査を受ける。
Go through airport security screening.
保安要員が建物を巡回している。
Security personnel are patrolling the building.
海上保安庁は日本の海の安全を守る機関だ。
The Japan Coast Guard is the agency that protects the safety of Japan's waters.
COMMON COLLOCATIONS:
- 保安検査 (security screening/inspection)
- 保安要員 (security personnel)
- 保安官 (security officer)
- 海上保安庁 (Japan Coast Guard)
- 保安基準 (safety standards)
- 保安林 (protection forest — forestry term)
COMPARISON:
- セキュリティ: security (loanword, used broadly for digital and physical security)
- 警備: guarding, security operations
- 保安: safety and security maintenance, often institutional or governmental