Is Tshivenda Language Really Nguni Language? Venda. Venda is generally regarded as a language isolate among S-group languages. While the Nguni group, for example, has four languages (Zulu, Xhosa, Swati and Ndebele), the Venda group has only one – Venda. … Another of South Africa’s minority languages, it is spoken by 2.4% of South Africans, or 1 209 388 people.