The term “Bantu” was coined by the German linguist Wilhelm Bleek and first used in his book A Comparative Grammar of South African Languages m(1862). Bleek noted similarity among languages spoken throughout the southern two-thirds of the African continent and theorized that they must all be part of a single language group. He dubbed the group Bantu because of the similarity in the word for “people” in a number of these languages. In Dualo, for example, the word is bato; in Herero it is abandu; in Kongo it is Bantu; in Mongo it is banto; in Rwanda it is abantu; in Shona it is wanhu; and in Tio it is baaru. Today, as many as 100 million people in 400 different ethnic groups living in the southern part of the African continent speak a Bantu language.