Wavevelocity is a general concept, of various kinds of wavevelocities, for an electromagnetic wave'sphase and speed concerning energy (and information) propagation.
The universal wave equation is v=fλ, where v is the speed the wave travels (in m/s), f is the frequency (in Hz, 1Hz=1/s), and λ is the wavelength (in m).
All types of waves have some common features, such as the wavespeed (how fast the wave moves), the amplitude of the wave, and the frequency or period of the wave.
Note that for MOST waves, the speed of the wave is normally fairly constant and is independent of the wave frequency and amplitude.
Deep water waves are waves that have a wavelength which is much smaller than the depth of the water.