Drupal Terminology

The term “theme” when used in the context of content management systems (cms), galleries, or e-commerce systems refers to the use of templating systems such as (phptemplate or smarty) which are used to structure and control the appearance of dynamically generated web content.

If you are asking this question it’s pretty safe to say that you are new to Drupal. After you’ve been dealing with Drupal for a while it’s easy to start thinking everyone knows what you are talking about when you start throwing out terms like “Drupal Modules” and “Drupal Themes”, but the truth of the matter is that to the average Joe on the street this all sounds like gibberish.