These terms all describe types of movements or actions. "Twerk" typically refers to a dance move involving hip and lower body movement. "Jerk" can describe a quick, sharp movement or a specific dance style from the 2000s. "Tremble" signifies involuntary shaking or shivering, often due to cold or fear. "Shake" is a more general term for moving something with quick, short, and repeated movements. While they all involve motion, the context and intention behind each term vary. Twerk. Jerk. Tremble. Shake. Whatever you do have fun! The bigger your vibrator the higher your vibrations.