Advertisement is a means of communication of an information about a product or service to a target audience. They are usually persuasive in nature and are mostly in a paid form. To target the audience, advertisements use every possible media that includes TV, print, Internet, radio, posters, events, visuals, and endorsements. To advertise a product or a service, a company hires an advertising agency, which converts ideas into visual forms such as posters, messages, themes, and colors. These ads then go on air after they have been approved by the client.