They simply call them recurring actors
That is called "movement".That is called "movement".That is called "movement".That is called "movement".
For example, when you have a spring you pull it, and some of it is tight together, and some is spread out. The spread out part is called a Rarefaction and the tight part is compression. The direction it moves is movement of wave, and the opposite side is the movement of coil.
Terminating. Non-terminating but recurring. Non-terminating and non-recurring.
a pulse of recurring sound such as an enharmonic, or such has tapping to the beat with crescendos and decrescendos
It's called the spring.
The movement of a donkey is called trot!
The movement of electrons is called a CURRENT.