Mao languages are in close and long-standing contact with
Koman languages, and linguistic affiliation does not always coincide with ethnic identity. Some Koman-speaking groups in western Ethiopia, like the
Kwama, are known as Mao, or vice versa, as in the case of the Ganza (also known as Koma). Intensified contact between Mao, Koman, and
Kefoid languages dates to the formation of the Gonga kingdom of
Anfillo in the late sixteenth century, following the westward migration of Kefoid-speaking elites during the
Oromo expansions into the
Gibe basin around 1560–1570. The establishment of Anfillo brought Mao populations into sustained and asymmetric contact with Kefoid languages as well as with neighboring Koman languages, whose speakers inhabited the surrounding lowlands. Within the Gonga political system, Mao speakers formed a subordinate social category, which promoted widespread
bilingualism and language shift toward
dominant languages. Mao communities were integrated as
serfs or dependent clients of Gonga
elites, creating daily interaction in labor, ritual, and military contexts, conditions known to facilitate
lexical borrowing and structural influence. In parallel, other Mao groups remained mobile at the margins of Gonga territories, maintaining master-client relations with
agricultural populations through the exchange of forest products, a setting that likewise favored multilingual repertoires. The designation
Mao historically functioned as a sociopolitical label applied to diverse subordinate populations (also known as Nao, Mawo, Manno, or Manjo) rather than a single linguistic entity. This has contributed to the present-day linguistic diversity and fragmentation of Mao languages, as well as to their heavy contact-induced restructuring through prolonged interaction with Koman, Kefoid, and later
Oromo languages. ==Numerals==