 "Accra" usually refers to the Accra Metropolitan Area, which serves as the capital of Ghana, while the district which is within the jurisdiction of the Accra Metropolitan Assembly is distinguished from the rest of the capital as the "City of Accra".In common usage, however, the terms "Accra" and "City of Accra" are used interchangeably.The intersection of the Lafa stream and Mallam junction serves as the western border of Accra, the Great Hall of the University of Ghana forms Accra's northern border, while the Nautical College forms the eastern border.