In physics, the study of motion is called kinetics. An astronomer investigating kinetics might be interested in the precise way the planets move.
Physical kinetics is also known as dynamics, and its primary concern is the way bodies move when forces (such as gravity) are acting on them. In chemistry and biochemistry, kinetics is all about reaction rates. A chemist focused on kinetics studies the rate of various chemical reactions under varying conditions. The term kinetics stems from the Greek kinetikos, "putting in motion."