The term "Oto-Manguean" refers to a family of indigenous languages spoken primarily in southern Mexico. This language family includes several distinct languages, such as Zapotec, Mixtec, and Amuzgo, each with its own dialects and variations. Oto-Manguean languages are known for their complex tonal systems, which can change the meaning of words based on pitch. Oto-Manguean languages are an important part of the cultural heritage of the Oto-Manguean peoples. These languages are not only a means of communication but also carry rich traditions, stories, and knowledge. Efforts are ongoing to preserve and revitalize these languages in the face of globalization and language shift.