Internet
Part of speech: noun
Definition: Any set of computer networks that communicate using the Internet Protocol. (An intranet.) The Internet, the largest global internet.
Cyberspace
Part of speech: noun
Definition: A world of information through the Internet.A three-dimensional representation of virtual space in a computer network.
Example sentence: I used to think that cyberspace was fifty years away. What I thought was fifty years away, was only ten years away. And what I thought was ten years away... it was already here. I just wasn't aware of it yet.