Barycenter and Centre of mass

Barycenter noun - (astronomy) the common center of mass around which two or more bodies revolve.

Centre of mass and barycenter are semantically related. In some cases you can use "Centre of mass" instead a noun "Barycenter".

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

Barycenter and centre of mass are semantically related. Sometimes you can replace term "Barycenter" with "Centre of mass", this terms are similar.