The first video shows a transverse pulse wave, It is a non-repeating wave where the spring is pulled perpendicular to its regular direction.

The second video shows a periodic transverse wave, it is the same as the last one, but instead of only one disturbance, it is repeating.

The third video shows a pulse longitudinal wave, the wave travels in the same direction of the spring, we bunched u[ some of the spring to make this wave.

The last video shows a periodic longitudinal wave, it is the same as the third wave, but it is repeating, while the last video only had one wave.