What's the main difference between a podcast and a radio?

Native speaker’s answer
Rebecca
The main difference is that a "podcast" is a prerecorded show that might have a main theme or idea, whereas a "radio" is a live station that people can tune to at any point of the day. "Radios" are often focused on news, trending topics, and music. Here, for example, "Life Comes at You Swiftly" would be about one person's individual experience as the child of Taylor Swift - the podcast has very specific content. Ex: I prefer to listen to the radio for music rather than podcasts. Ex: Did you hear the news on the radio?