Webpage vs Website
There are many, surprisingly, who cannot differentiate between website and webpage with the result that they use the words interchangeably. This is incorrect as webpage is just a subset of website and a website may be anything from a single webpage to hundreds of webpages linked together through navigational links. A simple definition of a website is a collection of web pages.
When we talk of a website, we refer to a huge amount of information spread over many pages but when we talk of a web page we are referring to a screenshot which is a small subset of the website and can be used for a particular purpose. The differences between a web page and a website can be summarized under these criteria.
Websites can range from the most simple, single page ones to huge websites that run into thousands o0f web pages. One example of a huge website is FaceBook where each member has a webpage on which he makes his profile and interacts with other members. Small businesses normally have small websites that run into several pages but a website can be a single webpage one also.
The content of a website is varied with different webpages containing different information. Big companies may have a contact me page, signup page and so on. Content on a single webpage contains specific information only.
A website is created in much the same way as a webpage. After completing a webpage, navigational link is created to connect it to other pages of the website.
It is clear then that the best analogy that can be drawn with a webpage and a website is that of a page and a book.