Angular motion is the motion of a body about a fixed point. The motion of pendulums and planets are examples of angular motion. Angular motion can also be used to describe the angle made during the motion of a body about a fixed axis.
Motion is the change in position of an object from its initial position to its final position with respect to time. Angular displacement or rotational displacement is the angle passed over at the point by a line drawn from the given axis of rotation, and it is expressed in radians. Angular motion with constant acceleration occurs in a machine with spinning parts.