You could compare a website to a shop window. Its somewhere, where you can show things to other people, generally in order to sell them, although it does not have to be.
In order to set up a shop window for other people to see, you need three things:
- You need a window display
- You need a shop to put your window display in
- That shop needs a physical address so that people can find it.
Similarly, your website needs three things: