Siouan languages
Siouan or Siouan–Catawban is a language family of North America that is located primarily in the Great Plains, Ohio and Mississippi valleys and southeastern North America with a few other languages in the east.
Assiniboine language
The Assiniboine language (also known as Assiniboin, Hohe, or Nakota, Nakoda, Nakon or Nakona, or Stoney) is a Nakotan Siouan language of the Northern Plains. The name Assiniboine comes from the term "Asiniibwaan", from Ojibwe, meaning "Stone Siouans". The reason they were called this was that Assiniboine people used heated stone to boil their food. In Canada, Assiniboine people are known as Stoney Indians, while they called themselves Nakota or Nakoda, meaning "allies""."