Here's a breakdown:
* Constable: A peace officer, typically with local jurisdiction.
* Constabulary: A body of constables, essentially a police force.
Examples of constabularies include:
* The Royal Canadian Mounted Police: Often referred to as the "Mounties," they are the national police force of Canada.
* The Metropolitan Police Service: The main police force for London, England.
* Local Sheriff's Departments: These operate in many US counties and have their own constabularies.
The term "constabulary" emphasizes the local nature of the police force and distinguishes it from larger, national forces. It often carries a connotation of a more traditional, smaller-scale law enforcement organization.