Siouan languages
Authors who call the entire family "Siouan" distinguish the two branches as "Western Siouan" and "Eastern Siouan" or as "Siouan-proper" and "Catawban". Others restrict the name "Siouan" to the western branch and use the name "Siouan–Catawban" for the entire family. Generally, however, the name "Siouan" is used without distinction.
Catawba language
Catawba (; "Katapa" ) is one of two Eastern Siouan languages of the eastern US, which together with the Western Siouan languages formed the Siouan language family.