What is Intranetwork?

internet and The Internet, there is one of another term which is "Interanetwork" clear that is this term used for internet or for The Internet. what is the difference?

Internet
This is the world-wide network of computers accessible to anyone who knows their Internet Protocol (IP) address - the IP address is a unique set of numbers (such as 209.33.27.100) that defines the computer's location. Most will have accessed a computer using a name such as http://www.vu.edu.pk

Intranet
An intranet is a private network with limited access This is a network that is not available to the world. Intranet permits access only to people who are members of the same company or organization with authorization.

An Internet is a public network whereas an intranet is a private network only available to trusted clients or employees. An intranet is really just a TCP/IP-based "little i" internet.