Is the runway is proper or common?

The term "runway" typically refers to a designated area for aircraft takeoff and landing. It can be classified as either "proper" or "common" based on specific contexts. A "proper runway" usually refers to a runway that meets certain regulatory standards and specifications for safety and operation, while a "common runway" might refer to one used by multiple types of aircraft or for various operations. To determine which classification applies, additional context is needed regarding its usage and regulations.