The ad refers to the patterns, news about the item. A service or an idea without people and must charge in order to motivate by the non-profit sales and be able to identify who owns the advertising piece.
The ad refers to the information about the product. Service or idea Without the need to use and cost. Motivated by the desire to sales. And can identify the owner of advertisements for them.
Advertising refers to a form of information about products, services or ideas by using and cost. To persuade by for the sales. And can identify the owner of the advertisement that.