Circular motion is a type of motion in which an object moves in a circular path around a fixed point.
An oscillation is a repetitive back and forth motion around a central equilibrium point.
The main difference between circular motion and oscillation is that in circular motion, the object moves in a circular path, while in oscillation, the object moves back and forth around a central point.
Examples of circular motion include the motion of a satellite around the earth or the motion of a carousel ride. Examples of oscillation include the motion of a pendulum or the vibration of a guitar string.
Circular motion can be thought of as a type of oscillation in which the object moves in a circular path, while oscillation can be seen as a general term for any back and forth motion. Additionally, circular motion can be described as a combination of oscillatory motion in the horizontal direction and uniform circular motion in the vertical direction.