Internet versus World Wide Web
The Internet and the World Wide Web. It seems as though people use them interchangeably all of the time. They think they are the same thing. They are separate things, though similar.
The internet is a massive network of computers. One computer can connect to another via the internet if both are connected. You likely use the internet for many things, including playing Minecraft (or any other video game) on an external server, downloading games from the app store, or browsing the World Wide Web. It simply connects computers to each other.
The World Wide Web
The World Wide Web is a system based upon the internet, but it is a small portion of it. The World Wide Web uses HTTP (Hyper-Text Transfer Protocol) to send information from servers to your computer. HTTP is only one of the protocols that the internet uses to send information. People use the World Wide Web with a browser, such as Chrome, Firefox, Safari or Internet Explorer, they decode the files and turn them into a human friendly page.