Static friction is:

Static friction is defined as the force that must be overcome to start moving an object at rest. It acts to keep stationary objects in place, and it can vary based on the amount of force applied to the object. Generally, static friction is always greater than kinetic friction, which is the friction that opposes the motion of two surfaces sliding against each other.

This relationship exists because once an object is in motion, it requires less force to keep it moving compared to the force necessary to initiate the movement from a standstill. Therefore, the value of static friction is higher up to a certain limit known as the maximum static friction. Understanding this concept is crucial in refrigeration systems and other mechanical applications, as it helps in determining how much force is required to initiate motion and how systems can resist changes in movement.