Marketing and advertising are two different things. Advertising and marketing both have the same goal, to get your business and messaging in front of your ideal customers. Gigital
Ads Advertising (which includes things like banner ads, social media ads, or billboards) is just a single strategy that falls under the marketing umbrella. In other words, advertising is a form of marketing.
Marketing also encompasses a ton of other strategies with the goal of getting the word out about your business (like content marketing, sales presentations, brochures, and podcasting). Marketing
Billboard Advertising is anything that has to do with ads. 
Marketing is any practice or action that’s taken to promote your brand. Video