The document discusses language shift, which is a change from using one language to using another, more dominant language. This often occurs among immigrant families and communities. It provides examples of language shift occurring among Coptic speakers in Egypt and Hungarian speakers in Austria. Language shift happens for various social, economic, political and demographic reasons, and it can ultimately lead to language loss or even death if a language is no longer spoken. Maintaining positive attitudes about a minority language and frequent use of it can help prevent language shift.