Fact : A common misconception is that all sign languages are the same worldwide. There are 137 sign languages!
A sign language (also signed language or simply signing) is a language which uses manual communication and body language to convey meaning, as opposed to acoustically conveyed sound patterns. This can involve simultaneously combining hand shapes, orientation and movement of the hands, arms or body, and facial expressions to fluidly express a speaker’s thoughts. They share many similarities with spoken languages (sometimes called “oral languages”, which depend primarily on sound), which is why linguists consider both to be natural languages, but there are also some significant differences between signed and spoken languages.
Wherever communities of deaf people exist, sign languages develop. Signing is not only used by the deaf its also used by people who can hear, but cannot physically speak. While they use space for grammar in a way that spoken languages do not, sign languages show the same linguistic properties and use the same language faculty as do spoken languages.] Hundreds of sign languages are in use around the world and are at the cores of local deaf cultures. Some sign languages have obtained some form of legal recognition, while others have no status at all.
A common misconception is that all sign languages are the same worldwide or that sign language is international. Aside from the pidgin International Sign, each country generally has its own, native sign language, and some have more than one, though sign languages may share similarities to each other, whether in the same country or another one. It is not clear how many sign languages there are; the 2013 edition of Ethnologue lists 137
A pidgin or pidgin language, is a simplified version of a language that develops as a means of communication between two or more groups that do not have a language in common. It is most commonly employed in situations such as trade, or where both groups speak languages different from the language of the country in which they reside (but where there is no common language between the groups). Fundamentally, a pidgin is a simplified means of linguistic communication, as it is constructed impromptu, or by convention, between individuals or groups of people. A pidgin is not the native language of any speech community, but is instead learned as a second language. A pidgin may be built from words, sounds, or body language from multiple other languages and cultures. Pidgins allow people or a group of people to communicate with each other without having any similarities in language. Pidgins usually have low prestige with respect to other languages.Not all simplified or “broken” forms of a language are pidgins. Each pidgin has its own norms of usage which must be learned for proficiency in the pidgin.
Courtesy : Wikipedia and Two Little Hands Productions