What is a Topic? – A topic is a conversation tread within a forum.
So for example, there may be a Group / sub-Group called “Cancer >> Bowel Cancer”, this discussion group will have an associated Forum.
Within this “Cancer >> Bowel Cancer” Forum, they may be many many threads such as:
What are the symptoms?
Which Institutions provide the best care?
Good consultants in Miami?
Different treatment types?
So each thread contains a discussion, posts, comments, updates etc on a very specific topic.