Advertising: Advertising is a means of communication with the users of a product or service. Advertisements are messages paid for by those who send them and are intended to inform or influence people who receive them. Advertising is always present, though people may not be aware of it. In today's world, advertising uses every possible media to get its message through.
Promotional and Institutional: Institutional promotion is used to convey your company's brand message to target customers. While it doesn't directly result in sales, the idea is that by promoting your company and its values, you appeal to customers that appreciate what you have to offer. Product promotion is routinely used to attract customers to a product and increase their perception of its value