What is the difference between advertisements and propaganda?

The goal of advertisement is to sell a product. The goal of propaganda is to sell an idea. Marketing and advertising are closely related business concepts, while propaganda is a more general communication term referring to falsehoods, untruths or exaggerated messages that individuals or groups convey in support of a given purpose or cause. In essence, propaganda is a broad umbrella of persuasive communication, and marketing and advertising are specific business applications. Truth-in-advertising and consumer-protection regulations try to deter businesses from including deceptive or misleading statements common to propaganda.