The term 'Sock Part' refers to the three components of a sock: TOE, HEEL, and ANKLE. The TOE is the front part of the sock, usually rounded and made of a thicker material than the rest of the sock. The HEEL is the back part of the sock, which is usually reinforced with extra padding for comfort. The ANKLE is the part of the sock that wraps around the ANKLE and provides support and cushioning. All three parts are essential for a comfortable and supportive sock.