Spoken words, pictures or gestures can be used to communicate, generally grouped as verbal and non-verbal forms of communication. Sometimes effective communication comes from silence too! Spoken and pictoral languages can be described as a system of symbols (sometimes known as lexemes) and thegrammars (rules) by which the symbols are manipulated.
Languages are used to communicate within a common group of people. Language is required for verbal communication. The word “language” also refers to common properties of languages.Language learning normally occurs most intensively during childhood.
Most of the thousands of human languages use patterns of sound or gesture for symbols which enable communication with others around them. Languages seem to share certain properties although many of these include exceptions. There is no defined line between a language and a dialect.Constructed languages such as Esperanto, programming languages, and various mathematical formalisms are not necessarily restricted to the properties shared by human languages.
A variety of verbal and non-verbal means of communicating exists such as body language, eye contact, sign language, haptic communication, chronemics, and media such as pictures, graphics, sound, and writing.