An example of a static page might be an HTML document (without any PHP code) you’ve written as an addition to your dynamically generated WordPress pages, perhaps an “About Me” page. The problem with purely static pages is that they are difficult to maintain. Changes you make to your WordPress settings, Themes and Templates will not be propagated to pages coded only in HTML. The Page feature of WordPress was developed, in part, to alleviate this problem. By using Pages, users no longer have to update their static pages every time they change the style of their site. Instead, if written properly, their dynamic Pages will update themselves along with the rest of your blog.
Despite the dynamic nature of Pages, many people refer to them as being static. In the context of web publishing, static and dynamic mean what has been described above. More generally, however, static can mean “characterized by a lack of change”. It is easy to see how this definition influenced the word’s use in describing types of web pages. It is also easy to see why people think of Pages as being static; Posts come and go, but Pages are here to stay since Pages are typically used to display information about your site which is constant (e.g., information about yourself, description of your site).