I need the relationships and difference between wavelength and frequency

A wavelength is the physical length of 1 osculation measured peak to peak. The frequency is the frequency of the osculations per second. Multiply one into the other the result equals the speed of the transmitted radio wave

wavelength is the length of one cycle.
Frequency is the number of cycles per second.
The higher the frequency, the shorter the wavelength.

Wavelength is how long (distance) something is from one cycle to the next. Frequency is how many cycles go by in one second. When you multiply them together, you get the speed of the wave.