process of conveying information between or among people.

Merriam-Webster Online Dictionary
communication (noun)
an act or instance of transmitting
a) information transmitted or - conveyed
b) a verbal or written message
a) a process by which information is exchanged between individuals through a system of symbols, signs, or behavior - common the function of pheromones in insect communication , also exchange of information
b) personal - rapport a lack of communication between old and young persons
a) a system (as of telephones) for transmitting or exchanging information
b) a system of routes for moving troops, supplies, and vehicles
c) personnel engaged in transmitting or exchanging information
a) a technique for expressing ideas effectively (as in speech)
b) the technology of the transmission of information (as by print or telecommunication)
communication (Wikipedia)

Communication (from Latin communicare, meaning "to share") is the act of conveying meanings from one entity or group to another through the use of mutually understood signs, symbols, and semiotic rules.

The main steps inherent to all communication are:

  1. The formation of communicative motivation or reason.
  2. Message composition (further internal or technical elaboration on what exactly to express).
  3. Message encoding (for example, into digital data, written text, speech, pictures, gestures and so on).
  4. Transmission of the encoded message as a sequence of signals using a specific channel or medium.
  5. Noise sources such as natural forces and in some cases human activity (both intentional and accidental) begin influencing the quality of signals propagating from the sender to one or more receivers.
  6. Reception of signals and reassembling of the encoded message from a sequence of received signals.
  7. Decoding of the reassembled encoded message.
  8. Interpretation and making sense of the presumed original message.

The scientific study of communication can be divided into:

The channel of communication can be visual, auditory, tactile (such as in Braille) and haptic, olfactory, electromagnetic, or biochemical.

Human communication is unique for its extensive use of abstract language. Development of civilization has been closely linked with progress in telecommunication.

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