Bantu languagesThe Bantu languages (English: UK, US Proto-Bantu: *bantʊ̀) are a language family of about 600 languages that are spoken by the Bantu peoples of Central, Southern, Eastern and Southeast Africa. They form the largest branch of the Southern Bantoid languages. The total number of Bantu languages is estimated at between 440 and 680 distinct languages, depending on the definition of "language" versus "dialect". Many Bantu languages borrow words from each other, and some are mutually intelligible.
Bantu peoplesThe Bantu peoples are an ethnolinguistic grouping of approximately 400 distinct native African ethnic groups who speak Bantu languages. The languages are native to 24 countries spread over a vast area from Central Africa to Southeast Africa and into Southern Africa. There are several hundred Bantu languages. Depending on the definition of "language" or "dialect", it is estimated that there are between 440 and 680 distinct languages.
Bantu expansionThe Bantu expansion is a hypothesis about the history of the major series of migrations of the original Proto-Bantu-speaking group, which spread from an original nucleus around Central Africa across much of sub-Saharan Africa. In the process, the Proto-Bantu-speaking settlers displaced, eliminated or absorbed pre-existing hunter-gatherer and pastoralist groups that they encountered. The primary evidence for this expansion is linguistic – a great many of the languages which are spoken across sub-Equatorial Africa are remarkably similar to each other, suggesting the common cultural origin of their original speakers.
Shona languageShona (ˈʃoʊnə; chiShona) is a Bantu language of the Shona people of Zimbabwe. The term is variously used to collectively describe all the Central Shonic varieties (comprising Zezuru, Manyika, Korekore and Karanga) or specifically Standard Shona, a variety codified in the mid-20th century. Using the broader term, the language is spoken by over 14,000,000 people. The larger group of historically related languages—called Shona or Shonic languages by linguists—also includes Ndau (Eastern Shona) and Kalanga (Western Shona).
Nguni languagesThe Nguni languages are a group of closely related Bantu languages spoken in southern Africa (mainly South Africa, Zimbabwe and Kingdom of eSwatini) by the Nguni people. Nguni languages include Xhosa, Zulu, Ndebele, and Swati. The appellation "Nguni" derives from the Nguni cattle type. Ngoni (see below) is an older, or a shifted, variant. It is sometimes argued that the use of Nguni as a generic label suggests a historical monolithic unity of the people in question, where in fact the situation may have been more complex.
Absorbing elementIn mathematics, an absorbing element (or annihilating element) is a special type of element of a set with respect to a binary operation on that set. The result of combining an absorbing element with any element of the set is the absorbing element itself. In semigroup theory, the absorbing element is called a zero element because there is no risk of confusion with other notions of zero, with the notable exception: under additive notation zero may, quite naturally, denote the neutral element of a monoid.
Identity elementIn mathematics, an identity element or neutral element of a binary operation is an element that leaves unchanged every element when the operation is applied. For example, 0 is an identity element of the addition of real numbers. This concept is used in algebraic structures such as groups and rings. The term identity element is often shortened to identity (as in the case of additive identity and multiplicative identity) when there is no possibility of confusion, but the identity implicitly depends on the binary operation it is associated with.