The terms Panoramas or Photospheres are used to describe individual photos that allow you to view much more than you would from a normal photo. Panoramic photos are either taken with wide angle lenses or a use a series of photos “stitched” together to form a wider angle view.
360 degree panoramic photos allow you to look all around and typically require a special tool or viewer to view properly.
Virtual Tours consists of a number of interconnected Photospheres which allow you to navigate though a particular location.