Not sure if this belongs here or in Maths. Just a question about convention and proper use of terms. It seems to me that if something is moving, it is moving in relation to something else. So any object at any speed automatically has a velocity, unless the speed is 0 maybe. Is there any situation when you would use the term Speed and it would have nothing to do with Velocity? This probably seems dumb, but I require an absolute definition that leaves no gaps.