Static websites are just HTML files (pages). They may contain text, images, links. ex. option menus and other data while even moving flash and java or java scripts files.
The definition «Static» doesn’t refer to an animation but the permanent content of the page. ie, for a static page the content is a fact every time it shows up.
To change the content of a static page, it can only be done by the creator, ie, it won’t contain a special administration area like a CMS.
A static website is suitable mainly for small presentations which will rarely need any future change in the content or adding additional content. Otherwise, it is more practical to use dynamic pages (CMS).