Calluses are rough, overgrown and thickened patches of skin that occur most often on the heels, balls of the foot, toes as well as knees, and the palms of the hands. Calluses form to prevent injury to skin that is repeatedly pinched, rubbed, or irritated.
About Socks:
Socks are a fabric covering to the foot which may rise to the ankle or above. Socks are worn over the foot and put on before shoes.