This document discusses diglossia, bilingualism, and multilingualism. It defines diglossia as a situation where a community uses two different languages or variations of the same language for different situations, such as using a "high variety" in formal settings and a "low variety" in daily communication. Bilingualism is defined as the ability to speak two languages, which can provide benefits like easier communication and increased knowledge. Multilingualism refers to using more than two languages, as is common in parts of the world where daily life requires knowledge of different languages for different contexts and groups. Research on discourse in multilingual settings often uses the term "code-switching" to describe language use without determining if distinct languages or