Webpage: A document on the World Wide Web, consisting of an HTML file and any related files for scripts and graphics, and often hyperlinked to other documents on the Web. -Dictionary.com
Web site: a connected group of pages on the World Wide Web regarded as a single entity, usually maintained by one person or organization and devoted to a single topic or several closely related topics. -Dictionary.com
Blog: an online diary; a personal chronological log of thoughts published on a Web page; also called Weblog, Web log. -Dictionary.com