noun
Public Safety Bureau (Tokyo Metropolitan Police Department)
Refers specifically to the bureau within the Tokyo Metropolitan Police Department responsible for public safety and security.
警視庁公安部が事件の捜査を担当している。
The Public Safety Bureau of the Tokyo Metropolitan Police Department is in charge of investigating the case.
noun
Ministry of Public Security (China)
Refers to the Chinese government ministry responsible for public security and police affairs.
中国の公安部は、国内の治安維持を担っている。
China's Ministry of Public Security is responsible for maintaining domestic public order.