Sign language
Besides normal signs, many sign languages use fingerspelling. Fingerspelling is also known as a "hand alphabet" or "dactylology". In fingerspelling, each letter in the alphabet of a spoken language has its own sign. Fingerspelling is a tool. People use it to spell names, acronyms and other words from spoken languages. Sometimes people do this when there is not a sign yet. Sometimes people use a fingerspelled word even when there is a normal sign for the same meaning. For example, when talking about a person, a signer might spell their name using fingerspelling. Or, they may use a "name-sign"—a special sign for that person.