A great way to understand the difference between PR, marketing and also social media is to picture them in these three categories:
OWNED MEDIA is coverage gained through channels that you own. This includes your social media sites, website, blog, apps etc.
EARNED MEDIA is coverage gained through public relations, press coverage, editorial, influencer relations, reviews, word of mouth, organic publicity etc. This is often seen as the most credible type of media.
PAID MEDIA is coverage gained through paid means. This includes traditional advertisements, brochures, email marketing, sponsored social media posts etc.
Generally speaking, a PR firm looks after the EARNED and content of the OWNED media. A marketing, design and/or advertising agency looks after the PAID media.
Over and out for another week!