AMERICAN SIGN LANGUAGE
American Sign Language, or ASL is a complex language made up of gestures involving hands, arms, head and even body language. It's entirely different from the English language with completely different grammar and vocabulary. ASL is a complete language on it's own and enables deaf and hard of hearing people to communicate effectively.
American Sign Language is the primary language of many North Americans who are deaf or hard of hearing. Not only is ASL different from signed English, it is also as different from its European counterpart as English is to French. Much like those with normal hearing can detect accents from different parts of the country, those who speak ASL can also detect geographical dialects and slang.