It seems you're asking about classifying waves based on the motion of the particles that the wave travels through. Here's a breakdown:

1. Transverse Waves:

* Particle motion: The particles in the medium oscillate perpendicular to the direction the wave travels.

* Example: Light waves, waves on a string, ripples on water.

2. Longitudinal Waves:

* Particle motion: The particles in the medium oscillate parallel to the direction the wave travels.

* Example: Sound waves, compression waves in a spring.

3. Surface Waves:

* Particle motion: A combination of transverse and longitudinal motion. Particles move in a circular or elliptical path.

* Example: Ocean waves.

Important Note: These classifications are based on the *medium* the wave travels through. Some waves, like electromagnetic waves (including light), don't require a medium and can travel through a vacuum.

Let me know if you'd like a more detailed explanation of any of these wave types!