Frequency 

Angular frequency is a cycle of repetition and refers to the angles covered by a frequency.   Thus angular frequency is equal to:

APM MO1

A bicycle wheel turning at five cycles per second will scan an angle of 10π radians per second.  Angular frequency is in units of radians per second.  

When a cycle completes, it does so in a given period of time.  The period of time to complete a cycle is the reciprocal of the frequency:

APM MO2

A bicycle wheel turning at five cycles per second will have a period of 1/5 second.  Or in other words, the time it takes to turn the wheel once at five cycles per second will be 1/5 second.

Not all cycles are stationary and go in circles.  Quite often, a cycle is associated with a velocity.  As a bicycle wheel turns and completes one cycle, the bike rider will travel a distance.  This distance is called the "wavelength" when applied to photons.  The distance the bicycle rider will travel will depend on its velocity per frequency:

APM MO3

So if the rider travels five feet per second, and the wheel turns at five cycles per second, then the rider has traveled one foot (the bicycle would be very small!).