What are the differences between a radio and a TV?

Well, the main difference is that a radio doesn't have video. Only audio. Another difference is the programming in most cases. In the early days of radio, they had several shows in different genres that people would tune into weekly, sort of like shows that we watch on Television now. Now, though, that is rare. Radio is mostly music-only or discussion-only fare, and has lost some of the appeal that there was in its other programming. Television has taken over most of the weekly shows and stories. Another difference is portability. It would distract a driver too much to watch television while driving, but radio is good. It is easier to take a radio along with you while traveling than it is a TV.