Wavelength and frequency are inversely related such that waves with longer wavelength tend to have lower frequency and those with shorter wavelength have higher frequency.
[tex]Frequency\alpha \frac{1}{wavelength}[/tex]
For example, gamma rays have a shorter wavelength but high frequency while radio waves have longer wavelength but have a low frequency.
The product of wavelength and frequency gives the speed of the wave.
Velocity = frequency × wavelength
Wavelength is measured in meters while frequency is measured in Hertz.