There are several synonyms for the term "chief of police." Some of the most commonly used include police commissioner, superintendent of police, director of public safety, police chief, and chief constable. These terms are often used interchangeably and refer to the highest-ranking officer within a police department or agency. In some countries, such as the United States, the position of chief of police is appointed by the local government, while in others, such as the United Kingdom, the position is often filled through internal promotion. Regardless of the specific title used, the chief of police is responsible for overseeing the day-to-day operations of the department and ensuring public safety within their jurisdiction.