The Discussions tool is a collaboration area to post, read and reply to threads on different topics, share thoughts about course materials, ask questions, share files, or work with your peers on assignments and homework.
Once in the Discussions Area, you will see a list of available forums and topics. After selecting a topic, you will see a list of available threads created by users within the course.
Forums: Used to organize discussions into categories.
Topics: The individual discussion subjects within a forum.
Threads: Responses posted by a user to the discussion topic.