An ad (other known as an advertisement) makes a person buy or sell a product or change a person's opinion about another product and tells them to buy their product instead for an easier living.
Advertising is providing information, calling attention to and making known something that you want to sell or promote. It is a message designed to promote or sell a product, a service, or an idea....
I found a great site which could be used on both ends of your argument. Imagine seeing a $100 dollar bill on the floor, picking it up, and realizing that it's an ad for local business. You can see an...