Communication is the sharing of ideas and information. While many people think of communication primarily in oral or written form, communication is much more. A knowing look or a gentle touch can also communicate a message loud and clear, as can a hard push or an angry slap.

Communication is defined as:
This definition suggests that there can be several different types of communication, falling into the categories of non-verbal or verbal.
Non-verbal communication involves exchanging information or transmitting data without the use of words. There are many examples of non-verbal communication everywhere in the world.
While you may not stop to think about it, a red light or a stop sign is a clear form of non-verbal communication. No one is physically telling you to stop, but you see that symbol or signal and know immediately what is expected of you.
Likewise, body language and facial expressions are also examples of non-verbal communication. Over the years, numerous research studies have been done to suggest that babies respond to smiling faces the world over, and that when a person sees someone else smile, he may become a bit happier as well.
Thus, while understanding non-verbal communication may require some knowledge of the cultural and social meanings behind the symbols and signs used, some types of non-verbal communication are instinctual and no teaching is necessary.
The system of verbal communication has become quite complex, with unique languages each having millions of words.
Unlike non-verbal communication, in order for verbal communication to be meaningful, there must generally be a readily accepted understanding of the meaning of a series of sounds. In other words, sounds and words alone aren't sufficient to communicate: the person transmitting the message and the person receiving the message generally must have a cultural background or shared knowledge that allows them to understand what those sounds have come to mean.
However, even some oral or verbal communication can be intuitive. For example, animals use verbal communication all the time to transmit messages to each other. Birds sing, some bugs chirp when mating, hounds bark to alert the pack on a hunt, and even whales sing, although scientists aren't 100 percent certain what those songs mean.
The fact that language was one of man's earliest developments, and the fact that there are similarities among languages and that animals also engage in oral communication, all suggest that although some shared cultural understanding is necessary, the specific act of verbal communication may be innate.
Over time, the methods and means used to communicate have expanded greatly. In early records, hieroglyphics and primitive cave paintings were used to communicate information and transmit messages. Oral stories and traditions were also passed down through generations and eventually many of these stories also came to be written down in some cultures.
The use of carrier pigeons, followed by Morse code and telegraph technology expanded the reach of communication, making it possible for people to send messages over longer distances.
Today, communication has expanded and is easier than ever before. Television allows messages to be communicated quickly and instantly to millions of viewers worldwide, and viewers can watch events such as political elections unfold in real time.
Perhaps nothing has changed communication so much as the Internet. While television and radio provided one-way communication, the Internet allows for the two-way exchange of information and lets people throughout the world send data instantly and share ideas immediately. Video chat, instant messages and even voice-over-IP telephone systems make it possible to connect with and communicate with more people than ever before.