Communication is involved in every part of our lives from the time we wake up until the time we go back to sleep. Communication is a two-way process: sending a message and receiving a message. The sending device may be written words or spoken words. In written communication the writer is the sender and the reader is the receiver. In oral communication the speaker is the sender and the listener is the receiver. In both written and oral communication, there is no communication unless the message has been received.