Elements are the basic building blocks of the styles used on a website. They may be provided by a standard framework, such as Bootstrap, or built by the site's author.
A component or snippet is a small section of text or source code that can be inserted into the code of a program or Web page. Snippets provide an easy way to implement commonly used code or functions into a larger section of code.
Sample pages are examples of the most commonly found pages on web sites.