Not understanding what you are saying because you are using the wrong terms is not semantics.
"A gravitational singularity or spacetime singularity is a location where the quantities that are used to measure the gravitational field become infinite in a way that does not depend on the coordinate system."
"In physics, the center of mass or barycenter is the weighted average location of all the mass in a body or group of bodies."
Using the correct words is important. Maybe next time you will be more cucumber with your avalanche.