Definition of gigahertz unit: = 109 Hz. Billion Hertz. How many cycles happen in one billionth of a second. Cycle per 10 -9 sup> sec. Example: Computer processor cycles (clock rate) are measured in GHz.
Definition of degrees per second unit: = 1/360 Hz. Degrees per second is a variant of the angular velocity unit. One hertz frequency is equal to turning a full circle (360°) in one second , 1 Hz = 360 deg / s.