Since conversations and discussions seem to be one and the same, why not choose one term. On the EX header above they are listed as "Conversations." But on the posts themselves they are called "discussions." Since there are so many confusing elements between "Blogs, Conversations, Discussions, Documents" it might be helpful to eliminate one of the two "Conversations or Discussions."
Giulia
We actually had the Conversations Community named Discussions originally but then realized that it contained more than just the opportunity to have a discussion. It also houses polls, documents, questions and blogs. So yes Discussions are part of the conversation but they're not the only type.
Mark