Motion is the movement of something or someone. When motion happens there is a change in position over time. Motion was developed about 300 years ago by Isaac Newton when he discovered all objects move according to the three basic laws. When learning about physics motion is the study of how things move.
motion is something moving or you moving it by pulling it or also pushing it away or toward you. This is important because this is how force works too. This is also a important to our world.
I would say these would be transform boundaries where the tectonic energy appears to be transformed from one plate to another such as off the coast of Guatemala so it is not a simple process of subduction,.