No difference at all. Radio waves are one of many types of electromagnetic waves.
yes, electromagnetic wave is a radio wave
That's like asking "What is different between children and people ?".Radio waves are electromagnetic waves.
The length.
Radio waves are lower frequency.
They're very different. A sound wave is a longitudinal wave and a radio wave is a transverse wave, radio waves are in the same family as light because they're electromagnetic waves whereas sound waves are just caused by particles passing on a vibration.
Wavelength.
Ground wave, sky wave and space wave propagation
The difference is their wavelengths. That means that their frequencies are different, and also the amount of energy carried by each photon.
A short-wavelength radio wave. An electromagnetic wave that is somewhere in between regular radio waves and infrared radiation.
electromagnetic waves
Frequency
Sound Wave