One can see that these meanings are common. Human communication on the basis of the relationship (relationship) is in communication, it must have involved two factions, one acting as a messenger.
You will see that one of these means is the coexistence of human communication are located on the core of a relationship (Relationship). That is, the communication will have to be involved in one of the 2 party party acts as the message sender.
It is evident that one of the things that these meanings are shared in the communication of human relations is located on the main (Relationship) in other words, you will be required to have a communication in the relevant department is 2 one party acting as a sender