Template

A web template is a tool used to separate content from presentation in web design, and for mass-production of web documents. It is a basic component of a web template system.

Web templates can be used to set up any type of website. In its simplest sense, a web template operates similarly to a form letter for use in setting up a website.

Template Uses
Web templates can be used by any individual or organization to set up their website. Once a template is purchased or downloaded, the user will replace all generic information included in the web template with their own personal, organizational or product information. Templates can be used to:
Display personal information or daily activities as in a blog.
Sell products on-line.
Display information about a company or organization.
Display family history.
Display a gallery of photos.
Place music files such as mp3 on line for play through a web browser.
Place videos on-line for public viewing.
To setup a private login area on-line.

Details on Wikipedia