In AmE, shopping center is a somewhat old-fashioned term for a development in a city containing stores facing a parking lot. Nowadays we usually call such places shopping plazas or strip malls. A shopping mall or, more commonly, just mall, is a large building or group of buildings containing stores which face pedestrian areas. Until recently, malls were always enclosed; it's now fashionable to build open-air malls that vaguely imitate the downtown shopping areas of smaller towns of fifty years ago.
Student or Learner