Facebook Ads, Google Adwords, PPC (pay-per-click) advertising, and SEO (search engine optimization) are all examples of paid advertising (SEO),
All of the advertising possibilities that Facebook provides to advertisers for their clients and their own Facebook page are often considered top social media marketing services. In most cases, Google offers similar services with different benefits, but the vast majority of people utilize both, so it's not an "either-or" situation.