What is the major difference between advertising and public relationship to mass media?

The major difference between advertising and public relations (PR) lies in their approach and purpose. Advertising is a paid form of communication that promotes specific products or services with the goal of driving sales, while PR focuses on building and maintaining a positive image and relationship between an organization and its audience through earned media and strategic communication. Advertising is often more direct and controlled, whereas PR relies on storytelling and media coverage to influence public perception.