The period of oscillation is the time it takes for an object to make a repetitive motion. The time and motion is often measured from a central value or point of equilibrium. The term can apply to any object that moves with a pattern at timed intervals.
The amount of time it takes for a period to occur depends on the object that is completing the motion. The size of the object has a direct influence on the time it takes for a period to complete as well as the speed of the oscillation. Frequency is then used to describe the rate at which the object completes these oscillations. For example, the minute hand of a clock completes one oscillation every sixty seconds, so it has a frequency of one oscillation per minute.