Language convergence in the context of Rijal Alma language

Language contact occurs when speakers of two or more languages or linguistic varieties interact with and influence each other. The study of language contact is called contact linguistics. Language contact can occur at language borders, between adstratum languages, or as the result of migration, with an intrusive language acting as either a superstratum or a substratum.

When speakers of different languages interact closely, it is typical for their languages to influence each other. Intensive language contact may result in language convergence or relexification. In some cases a new contact language may be created as a result of the influence, such as a pidgin, creole, or mixed language. In many other cases, contact between speakers occurs with smaller-scale lasting effects on the language; these may include the borrowing of loanwords, calques, or other types of linguistic material.

Mortlockese (Kapsen Mwoshulók), also known as Mortlock or Nomoi, is a language that belongs to the Chuukic group of Micronesian languages in the Federated States of Micronesia spoken primarily in the Mortlock Islands (Nomoi or Lower Mortlock Islands and the Upper Mortlock Islands). It is nearly intelligible with Satawalese, with an 18 percent intelligibility and an 82 percent lexical similarity, and Puluwatese, with a 75 percent intelligibility and an 83 percent lexical similarity. The language today has become mutually intelligible with Chuukese, though marked with a distinct Mortlockese accent. Linguistic patterns show that Mortlockese is converging with Chuukese since Mortlockese now has an 80 to 85 percent lexical similarity.

There are approximately five to seven thousand speakers of Mortlockese in the Mortlock Islands, Guam, Hawaii, and the United States. There are at least eleven different dialects that show some sort of correspondence to the Mortlock Island groups.

Modern Scots comprises the varieties of Scots traditionally spoken in Lowland Scotland and parts of Ulster, from 1700.

Throughout its history, Modern Scots has been undergoing a process of language attrition, whereby successive generations of speakers have adopted more and more features from English, largely from the colloquial register. This process of language contact or dialectisation under English has accelerated rapidly since widespread access to mass media in English, and increased population mobility became available after the Second World War. It has recently taken on the nature of wholesale language shift towards Scottish English, sometimes also termed language change, convergence or merger.

Ural-Altaic or Uralo-Altaic is a linguistic convergence zone and abandoned language-family proposal uniting the Uralic and the Altaic (in the narrow sense) languages. It is now generally agreed that even the Altaic languages do not share a common descent: the similarities between Turkic, Mongolic and Tungusic are better explained by diffusion and borrowing. Just as in Altaic, the internal structure of the Uralic family has been debated since the family was first proposed. Doubts about the validity of most or all of the proposed higher-order Uralic branchings (grouping the nine undisputed families) are becoming more common. The term continues to be used for the central Eurasian typological, grammatical and lexical convergence zone.

Indeed, "Ural-Altaic" may be preferable to "Altaic" in this sense. For example, J. Janhunen states that "speaking of 'Altaic' instead of 'Ural-Altaic' is a misconception, for there are no areal or typological features that are specific to 'Altaic' without Uralic." Originally suggested in the 18th century, the genealogical and racial hypotheses remained debated into the mid-20th century, often with disagreements exacerbated by pan-nationalist agendas.

Decreolization is a postulated phenomenon whereby over time a creole language reconverges with the lexifier from which it originally derived. The notion has attracted criticism from linguists who argue there is little theoretical or empirical basis on which to postulate a process of language change which is particular to creole languages.