airspace alentours ambience ambit area belt borderlands circle circuit circumambiencies circumjacencies circumstances compass confines context continental shelf corridor country department district division entourage environing circumstances environment environs gestalt ground habitat heartland hinterland land milieu neighborhood offshore rights outposts outskirts part parts perimeter periphery place premises purlieus quarter region salient section situation soil space suburbs surroundings terrain territory three-mile limit total environment twelve-mile limit vicinage vicinity zone