Before we talk about content and search engines in any detail, there is a fundamental trick to understanding how they work tog, it is important to take a moment and think about what a website is and how computers see them. This is the key to understanding how to use search engine optimization.
According to the definition on Wikipedia: "a website (also written as web site) is a collection of web pages and related content that is usually identified by a common domain name and published on at least one web server". This means a web site is a construct of pages and web hosting.