Social Media Community & Content Management
A social media manager is responsible for being the brand on social media.
They create content, craft copy for posts, respond to comments, answer questions, and much more as the brand. Social media managers, more often than not, deal with people who have a relationship with, or have heard of, the brand.
A community manager is responsible for advocating a brand on social networks. They create their own social persona and actively go out within the online community to connect with potential customers and advocate accordingly.