The answer in the blanks are: one way communication; two way communication. It is because, the reason why one way communication is more accurate because the communication or message that is being sent to is only on a one direction, this makes it accurate and more effective to use because there are no discrepancies. The two way is less accurate and less effective than the one way communication because it does not contain a one direction in terms of communication but it involves transmit information with the parties.