A static site is unified with stable substance, where each client sees precisely the same thing on every individual page. Then again, a powerful site is one where content is pulled on-the-fly, permitting its substance to change with the client.
In general, dynamic means energetic, capable of action and/or change, or forceful, while static means stationary or fixed. In computer terminology, dynamic usually means capable of action and/or change, while static means fixed.
