Many people confuse "The Internet" and "The World Wide Web," as if the two were the same. They are not. The Internet is larger, containing all the parts that make up the world-wide network of computers. The World Wide Web is one of many parts, or protocols, that make up the Internet. Email is another part, just like the WWW.
A lot of the Internet you know about; however, it is useful to know about some commonly used but little-understood facts about the Internet.