Turning radius refers to the minimum radius of the circle that a vehicle can turn in. There are several synonymous terms for turning radius, including turning circle, turning diameter, turning path, and turning sweep. All of these terms are used to describe the circular path a vehicle takes when turning. It's an important factor in determining whether a vehicle can make a turn safely and efficiently, particularly in tight spaces. Vehicles with a smaller turning radius can maneuver more easily and provide better handling in tight spaces. These terms are used interchangeably, depending on the context and the industry, but they ultimately refer to the same concept.