S: (n) communication, communicating (the activity of communicating; the activity of conveying information) "they could not act without official communication from Moscow"
S: (n) transmission (communication by means of transmitted signals)
S: (n) intercommunication (mutual communication; communication with each other) "they intercepted intercommunication between enemy ships"
S: (n) medium (an intervening substance through which signals can travel as a means for communication)
S: (n) channel, communication channel, line ((often plural) a means of communication or access) "it must go through official channels"; "lines of communication were set up between the two firms"
S: (n) mail, mail service, postal service, post (the system whereby messages are transmitted via the post office) "the mail handles billions of items every day"; "he works for the United States mail service"; "in England they call mail `the post'"
S: (n) discussion, treatment, discourse (an extended communication (often interactive) dealing with some particular topic) "the book contains an excellent discussion of modal logic"; "his treatment of the race question is badly biased"
S: (n) exhortation (a communication intended to urge or persuade the recipients to take some action)
S: (n) expression, verbal expression, verbalism (the communication (in speech or writing) of your beliefs or opinions) "expressions of good will"; "he helped me find verbal expression for my ideas"; "the idea was immediate but the verbalism took hours"
S: (n) examination, exam, test (a set of questions or exercises evaluating skill or knowledge) "when the test was stolen the professor had to make a new set of questions"
S: (n) persuasion, suasion (the act of persuading (or attempting to persuade); communication intended to induce belief or action)
S: (n) dissuasion (persuading not to do or believe something; talking someone out of a belief or an intended course of action)
S: (n) contact, touch (a communicative interaction) "the pilot made contact with the base"; "he got in touch with his colleagues"
S: (n) traffic (the amount of activity over a communication system during a given period of time) "heavy traffic overloaded the trunk lines"; "traffic on the internet is lightest during the night"