Sign language is a visual language that uses handshapes (the shape of the hand for different words or letters of the alphabet), movements, facial expressions, and body language to convey meaning.Anything that can be said in a spoken language can be communicated in sign language. It is a very effective way of communicating emotion, telling stories, and describing situations. It can be used efficiently for getting across complex and subtle ideas. Communities of individuals with hearing impairment throughout the world use their own sign language. Each sign language has developed separately and each is a distinct language. The facial expressions and body movements involved too differ from one sign language to another. Every sign language has a comprehensive vocabulary and its own grammatical rules. These grammatical rules are different from that of spoken languages. Sign language is used by people with different degrees of hearing loss. Some people learn it as young children, while others choose to learn it later in life.There is no universal sign language:- Different sign languages are used in different countries or regions. Therefore, it is concluded that Sign language has a grammar is true of sign language.Additional Information The Indian Sign Language (ISL) is the sign language used by the deaf community in India. It is one language. Like all other languages, it has grown over time and has developed regional variations. The variation is in the vocabulary.The grammar of ISL is the same in all the variations of ISL used in India. This variation in vocabulary has made it difficult to standardize the Indian Sign Language. However, some experts are of the opinion that to encourage natural standardization, ISL materials should be produced and used in education. This, in time, will become the standard as it influences a large number of users.