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.
Bidayuh
The Serian Bidayuhs have a distinct dialect known as the "Bukar & Sadong language" Bidayuh, which is not intelligible to Bidayuhs from other Districts. Here are some examples of the differences in the various dialects spoken in Serian, with their English and Malay equivalents. Also included are two Philippine languages, Kapampangan and Tagalog: