Whether it's jingles you hear on the radio, the classified section of your newspaper or your favorite magazines, everywhere you turn you are exposed to advertising in one form or another.
Publicity is everywhere too.
When celebrities lend their names to popular causes, that is publicity. When you send out a press release, you hope it will get picked up and create publicity for your business. Publicity helps build credibility by letting your potential customers see another side of your business. In its best incarnation, it informs, entertains or educates. In short, advertising is something you create, pay for and control.