If you consider Internet as a highway system, you can consider www as a package delivery system that uses that highway.

Internet

• global network of networks or
• global data communication system
• provides an infrastructure
• refers mostly to hardware, networks, computer etc.
• can be accessed by anyone, is public
• provides unlimited information

World Wide Web (www)

• collection of information that is accessed via Internet
• repository of common resources that can be accessed via the internet.
• a service that operates on top of the Internet ( infrastructure )
• can be referred as a software

Internet is a public network, while Intranet is a private network.

Intranet

• a private network for information management and sharing among only the members or employees
• cannot be accessed by everyone
• limited number of users with limited information
• owned by private firms
• is safe as compared to Internet
• Example : IT Department intranet, HR Intranet.