Unspoken language is a form of communication that does not involve verbal speech. It includes signing, braille, and costing, which are all seven letter words. Signing is a form of communication used by people who are deaf or hard of hearing, in which hand gestures and body language are used to convey meaning. Braille is a system of raised dots that can be read by touch, used by people who are blind or visually impaired. Costing is a form of communication used by people with physical disabilities, in which facial expressions, body movements, and gestures are used to convey meaning.