The measurement between waves depends on what kind of waves you're talking about! Here are a few examples:

For waves in water:

* Wavelength: This is the distance between two successive crests or troughs of a wave. You can think of it as the length of one complete wave cycle.

For light waves (electromagnetic waves):

* Wavelength: This is the distance between two successive peaks or troughs of the electric or magnetic field. Different wavelengths of light correspond to different colors.

For sound waves:

* Wavelength: This is the distance between two successive compressions or rarefactions of the medium. Higher frequency sounds have shorter wavelengths, and lower frequency sounds have longer wavelengths.

In general, the measurement between waves is called the wavelength. It's important to specify the type of wave you're interested in because the concept of wavelength applies to many different kinds of waves.