A website (or Web site, according to Associated Press guidelines) is a collection of Web pages, typically common to a particular domain name or subdomain on the World Wide Web on the Internet.
To date, there are over 80 million websites in the world with registered domains.
A web page is an HTML/XHTML document accessible generally via HTTP.
All publicly accessible websites are seen as constituting a mammoth “World Wide Web” of information.
The pages of a website will be accessed from a common root URL called the homepage, and usually reside on the same physical server. The URLs of the pages organise them into a hierarchy, although the hyperlinks between them control how the reader perceives the overall structure and how the traffic flows between the different parts of the sites.
Some websites require a subscription to access some or all of their content. Examples of subscription sites include many Internet pornography sites, parts of many news sites, gaming sites, message boards, Web-based e-mail services and sites providing real-time stock market data.