A public community is accessible by anyone. Non-members can browse all the content created in the community, which increases brand awareness and visibility. It’s typically easy for people to join these communities.
A profile is a page of an online community or social media site that represents information about a user or business. These pages allow other members of a community to discover more about the user.
A private community is a community that is closed to the outside world. All discussions and content shared is visible to members only. Private communities may have stricter requirements about who can join than public communities.