Digital marketing refers to the use of various digital channels, such as search engines, websites, social media, email, and mobile apps, to promote a product or service. It can be used for a wide range of goals, such as increasing brand awareness, driving website traffic, and converting leads into customers.
Social media marketing, on the other hand, specifically refers to the use of social media platforms, such as Facebook, Instagram, Twitter, and LinkedIn, to achieve digital marketing goals. This can include creating content, running social media ads, and engaging with customers on social media.
In short, social media marketing is a subcategory of digital marketing, and they are closely related, but they are not the same thing.