A brochure site is a static site that displays information on your business and allows you to be visible on the internet. It provides mainly contact details and possibly a few product images in a one page site.
5-10 PAGE STATIC SITE
This involves multiple pages and can involve multiple layouts and technologies. It can include flash or other elements and often includes Home Pages, About Us, Gallery of Products, Contact etc...
CMS INTERACTIVE SITE
This is a interactive site that allows for the administrator/client to change the information themselves. It is a Content Management System and involves such languages as SQL and PHP.