Advertising is a one-way communication whose purpose is to inform potential customers about products and services and how to obtain them. Promotion involves disseminating information about a product, product line, brand, or company. It is one of the four key aspects of the marketing mix. Advertising may be one form of promotion.

Comparison chart

Advertising versus Promotion comparison chart
Advertising Promotion
Time Long term Short term
Definition One-way communication of a persuasive message by an identified sponsor, whose purpose is non-personal promotion of products/services to potential customers. A Promotion usually involves an immediate incentive for a buyer (intermediate distributor or end consumer). It can also involve disseminating information about a product, product line, brand, or company.
Price Expensive in most cases Not very expensive in most cases.
Suitable for Medium to large companies Small to large companies
Sales Assumption that it will lead to sales Directly related to sales.
Example