Both the industries are altogether different although they’re generally confounded as being one and the same. The reason for advertising is to make mindfulness about items or services to make a sale. It’s a restricted, paid for correspondence. The reason PR is to build and improve the reputation of any organization or person. It’s a two-way communication that is natural content. Include examples of the two to disclose to your questioner that you understand the distinction. The response to this question doesn’t need to be long. It’s more essential to be clear and exact.