Static Website looks basic and is for a smaller company,and simply delivers information without any bells and whistles, it could be a static website.
Static websites can only really be updated by someone with a knowledge of website development. Static websites are the cheapest to develop and host.
Advantage :Quick to develop, Cheap to develop, Cheap to host.
Disadvantage : Requires web development expertise to update site, Site not as useful for the user, Content can get stagnant
Dynamic website can give the website owner the ability to simply update and add new content to the site.Some examples of dynamic website features could be: content management system, e-commerce system, bulletin / discussion boards, intranet or extranet facilities, ability for clients
or users to upload documents, ability for administrators or users to create content or add information to a site (dynamic publishing).
Advantage : Much more functional website, Much easier to update, New content brings people back to the site and helps in the search engines
,Can work as a system to allow staff or users to collaborate
Disadvantage : Slower / more expensive to develop, Hosting costs a little more.