Advertising is not about selling. Advertising is the process of creating communication pieces that persuade a target audience to have a new understanding and appreciation for a product, service, company or cause.
Graphic design is the process of solving problems (design) that are manifested in 2-dimensions, otherwise known as print. Clearly, graphic design has transcended the print medium to encompass many media, including film and video, the internet, computer application interfaces, packaging and so on.
AnAdGuy does all of these and to see samples please visit the Gallery.