警 - admonish, commandment

alarm bell; fire bell

bodyguard; escort

police superintendent

police station

alarm (fire, burglar, railroad-crossing, etc.); sensor

police officer; policeman; constable

police inspector

vigilance; caution; alertness; precaution; being on guard

warning; caution; admonition

police officer; policeman; policewoman

Metropolitan Police Department

National Police Agency; NPA