Wide Web (or simply Web for short) is a term frequently
used (incorrectly) when referring to "The Internet", WWW
has two major meanings:
loosely used: the whole constellation of resources that
can be accessed using Gopher, FTP, HTTP,telnet, USENET,
WAIS and some other tools.
the universe of hypertext servers (HTTP servers), more commonly
called "web servers", which are the servers that serve web
pages to web browsers.
(Upper case I),