Communication -from Latin "communis", meaning to share) is the activity of conveying information through the exchange of thoughts, messages, or information, as by speech, visuals, signals, writing, or behaviour. Communication requires a sender, a message, and a recipient, although the receiver need not be present or aware of the sender's intent to communicate at the time of communication; thus communication can occur across vast distances in time and space. Communication requires that the communicating parties share an area of communicative commonality.

The communication process is complete once the receiver has understood the message of the sender. Communication is the process where the one person is expressing his or her idea and the other one is listening to the idea being expressed by the one who is talking. That is how you define communication. When this results to have an understanding to both of them, therefore there is already a communication. In other words, when a person is talking, the other person should listen so that he will understand to what the other person is talking about.

When a person talks and nobody listens, then there is no communication happening because there is no understanding. The people just heard what the person in front of them is talking but they do not listen to it well that is why they do not understand about the topic. I will give you further examples for you to understand what communication is. Mass Communication -is the academic study of how individuals and entities relay information through mass media to large segments of the population at the same time.

It is usually understood to relate to newspaper and magazine publishing, radio, television and film, as these are used both for disseminating news and for advertising. Mass communication helps provide information, interpret it, create social awareness, and educate the masses. Mass communication research includes most of communication media institutions and processes such as diffusion of information, and media effects such as persuasion or manipulation of public opinion. In the United States, for instance, several university departments were remodelled into schools or colleges of mass communication or "journalism and mass communication".

Levels of Communication 1) INTRAPERSONAL COMMUNICATION- is language use or thought internal to the communicator. Intrapersonal communication is the active internal involvement of the individual in symbolic processing of messages. The individual becomes his or her own sender and receiver, providing feedback to him or herself in an on-going internal process. It can be useful to envision intrapersonal communication occurring in the mind of the individual in a model which contains a sender, receiver, and feedback loop. 2) INTERPERSONAL COMMUNICATION-

Interpersonal communication is defined by communication scholars in numerous ways, though most definitions involve participants who are interdependent on one another, have a shared history. Communication channels are the medium chosen to convey the message from sender to receiver. Communication channels can be categorized into two main categories: Direct and Indirect channels of communication. Direct channels are those that are obvious and can be easily recognized by the receiver. They are also under direct control of the sender. In this category are the verbal and non-verbal channels of communication.

Verbal communication channels are those that use words in some manner, such as written communication or spoken communication. Non-verbal communication channels are those that do not require silly words, such as certain overt facial expressions, controllable body movements (such as that made by a traffic police to control traffic at an intersection), color (red for danger, green means go etc), sound (sirens, alarms etc. ). Indirect channels are those channels that are usually recognized subliminally or subconsciously by the receiver, and not under direct control of the sender.

This includes kinesics or body language, that reflects the inner emotions and motivations rather than the actual delivered message. It also includes such vague terms as "gut feeling", "hunches" or "premonitions". Channels means mode of communicating the messages. Participants is the communicators who are both senders and receivers. Context refers to the interrelated condition of communication. It consists of such factors as:  Physical Milieu Balance of interpersonal communication 3. ) GROUP COMMUNICATION- refers to the nature of communication that occurs in groups that are between 3 and 12 individuals.

Small group communication generally takes place in a context that mixes interpersonal communication interactions with social clustering. 4. ) PUBLIC COMMUNICATION- It's at the heart of our economy, society, and politics. Studios use it to promote their films. Politicians use it to get elected. Businesses use it to burnish their image. Advocates use it to promote social causes. It's a field built on ideas and images, persuasion and information, strategy and tactics. No policy or product can succeed without a smart message targeted to the right audience in creative and innovative ways. Modes of Communication amateurs use a variety of voice, text, image, and data communications modes over radio. Generally new modes can be tested in the amateur radio service, although national regulations may require disclosure of a new mode to permit radio licensing authorities to monitor the transmissions. Encryption, for example, is not generally permitted in the Amateur Radio service except for the special purpose of satellite vehicle control uplinks. The following is a partial list of the modes of communication used, where the mode includes both modulation types and operating protocols. History of Communication Dates back to prehistory, with significant changes in communication technologies (media and appropriate inscription tools) evolving in tandem with shifts in political and economic systems, and by extension, systems of power. [1] Communication can range from very subtle processes of exchange, to full conversations and mass communication. Human communication was revolutionized with speech approximately 200,000 years ago]. Symbols were developed about 30,000 years ago,[2] and writing about 7,000[On a much shorter scale, there have been major developments in the field of telecommunication in the past few centuries. Communication begins with language, the distinctive ability which has made possible the evolution of human society. With language any message, no matter how complex, can be conveyed between people over a limited distance - within a room or place of assembly, or across a short open space. In modern times 'town criers' hold an annual contest to discover which of them can shout a comprehensible message over the greatest distance. The world record is less than 100 metres. Already, at that short range, a more practical alternative is to run with the message.