there are a bunch of important differences: - can only post in one community at a time. - separate follow list for communities you’ve joined - communities have a name, banner, and description and can only be created once (name is immutable, non addressable) - size of community is counted by number of people who have that community id on their community follow list. - community posts have a distinct design (shows the community name on top like in X) - community can have addressable data associated with it via the creator or frost creators (sidebar info like on reddit)