Velocities are a measure of how fast an object is moving. There are many synonyms for the word velocity, including speed, pace, rate, cadence, momentum, rapidity, swiftness, and quickness. Each of these words represents a slightly different aspect of velocity, from the overall speed of an object to the smoothness of its movements. Other synonyms for velocity might include tempo, flow, or even just zoom or zippiness. Depending on the context in which it is used, a particular synonym for velocity might be more appropriate or convey a slightly different meaning, but all of these words essentially describe the same fundamental concept of motion.