Tswa (Xitswa) is a South-Eastern Bantu language in Southern Mozambique. Its closest relatives are Ronga and Tsonga, the three forming the Tswa–Ronga family of languages.
Tswa is mainly spoken in the rural areas west of Inhambane. Its largest dialect, Hlengwe, extends westwards to Southern Zimbabwe; Maho (2009) considers this to be a distinct language. The other principal dialects are Dzibi (Dzivi) and Dzonga. According to some estimates, there are just over one million BaTswa, but not all can speak the Tswa language. Many Mozambicans, including census officials, often consider it a dialect of Tsonga (Shangaan).
Tswa uses a variant of the Latin alphabet previously used for Tsonga. It is partly based on those developed by the Portuguese colonists and Methodist missionaries to the region. The first major transliterator for the Tswa language into English was the Englishman J. A. Persson, who consolidated the alphabet for Tswa specifically.
The letter 'q' is sometimes used in words imported from Zulu, in which case it is pronounced in various ways, the clicks of Zulu not being native to the Tswa language. There are also several compounds, which include lateral fricatives.
Ronga (XiRonga; sometimes ShiRonga or GiRonga) is a south-eastern Bantu language in the Tswa–Ronga family spoken just south of Maputo in Mozambique. It extends a little into South Africa. It has about 650,000 speakers in Mozambique and a further 90,000 in South Africa, with dialects including Konde, Putru and Kalanga.
The Swiss philologist Henri Alexandre Junod seems to have been the first linguist to have studied it, in the late 19th century.
Its alphabet is based on that of Tsonga as provided by Methodist missionaries and Portuguese settlers.
Ronga is grammatically so close to Tsonga in many ways that census officials often consider it a dialect; its noun class system is very similar and its verbal forms are almost identical. Its most immediately noticeable difference is a much greater influence from Portuguese, due to being centred near the capital Maputo (formerly Lourenço Marques).
The Southern Bantu languages are a large group of Bantu languages, largely validated in Janson (1991/92). They are nearly synonymous with Guthrie's Bantu zone S, apart from the exclusion of Shona and the inclusion of Makua. They include all of the important Bantu languages of South Africa, Botswana, and Mozambique.
Language groups are followed by their code in the Guthrie classification.