What is a single disturbance that moves through a medium called?

1. Flicking a stretched rope once sends one bump travelling along it. 2. A single disturbance that moves through a medium is called a pulse. 3. A wave is different because it is a whole train of pulses following one another. _Source: Siyavula Physical Sciences Grade 10 (Everything Science, CC BY 4.0), Chapter 7: Transverse pulses_