Kinyarwanda is the chief spoken language in Rwanda. It is also spoken in the east of DRC and in the south of Uganda (Bufumbira-area). Kinyarwanda is a tonal language of the Bantu language family (Guthrie D61). Kinyarwanda is closely related to Kirundi spoken in the neighboring country, Burundi and to Giha of western Tanzania. The inhabitants of Rwanda and Burundi belong to three different ethnic groups: Hutu, Tutsi, and Twa (a pygmy people). The fact that these ethnic groups share the same language is assumed to be the result of the Hutu outnumbering the latter two groups.