Socks provide protection by adding a layer between the shoe and your foot, easing friction and preventing blisters. Modern socks also have cushioned soles and padding to provide even more comfort. Moisture control.
Socks are also used to control foot perspiration. When skin is exposed to excess moisture it becomes water logged. This concept is well understood by anyone..
A sock is a piece of clothing worn on the feet and often covering the ankle or some part of the calf. Some types of shoes or boots are typically worn.