The glenoid cavity is found in the upper body, where the humerus joins the scapulaand is referred to as the shoulder socket. It is not very deep and allows for a great range of motion. The acetabulum is in the lower body, where the ilium joins the femur. It is a deep socket and is very secure for the support and ability to bear the weight of our bodies
The glenoid cavity is a structural feature on the scapula bone (also known as the shoulder blade or shoulder bone)and acetabulum is  the socketof the hip bone,into which the head of the femur fits..