The American Sign Language is one of unique language in the world because the ASL being communicated into visual way such as using the hands instead of verbal. The language is used by the deaf community and the function
of ASL language were expressed into visual-gesture that it is one of communication mode that was used by deaf people in America. The ASL is the manual language, which is used by the hands, and the ASL linguistic has the language features that show the pattern of language which functions as actual language. There are many different perspectives that defines the term of ASL but mainly the term of ASL is the language that deaf Americans uses the manual language by their hands and the language itself has the actual grammatical rules like any other languages. In other resource discussed the term of ASL: The American Sign Language is a complete, complex language that employs signs made with the hands and other movements, including facial expressions and postures of the body. It is the first language of many deaf North Americans, and one of several communication options available to deaf people.