Frozen shoulder contributes to world wide stiffness and pain in all elements of your shoulder with limited motion in all directions. A torn rotator cuff could induce a particular discomfort over the lateral or outside edge of your respective shoulder with pain with relocating in particular directions only (shoulder abduction) https://www.theorthopaedicandpainpractice.com/what-does-it-mean-to-have-a-frozen-shoulder/