Center of mass and Centre of gravity

Center of mass noun - Point representing the mean position of the matter in a body.

Centre of gravity and center of mass are semantically related in center of gravity topic. In some cases you can use "Centre of gravity" instead a noun phrase "Center of mass", when it comes to topics like point of balance.

Centre of gravity noun - The point within something at which gravity can be considered to act; in uniform gravity it is equal to the center of mass.

Center of mass and centre of gravity are semantically related in center of gravity topic. You can use "Center of mass" instead a noun phrase "Centre of gravity", if it concerns topics such as point of balance.