General discussion section would require participation between speaker and audience in order to make a successful communication by both senders and recipients of the message must have an interaction or exchange of information during the discussion.
The discussion will be based on participation between the speaker and the audience, making communication success by both the sender and receiver must have a dialog or exchange information during the conversation.
The general conversation requires participation between the speaker and the listener to make communication success by both the sender and the receiver will have to interact or exchange of information during the conversation.