mapudungun

As a proper noun Mapudungun

is a language isolate spoken in Chile and Argentina by the Mapuche people.

As a noun Araucanization is

the process of expansion of the Mapudungun language and others elements of the Mapuche culture from their homeland Araucania into the plains of Patagonia, so as to assimilate such other native Amerindian peoples as the Puelches and Tehuelches.

Araucanian is a synonym of mapudungun.

As proper nouns the difference between mapudungun and araucanian

is that mapudungun is a language isolate spoken in Chile and Argentina by the Mapuche people while Araucanian is the Mapudungun language.

As a noun Araucanian is

a Mapuche.

As an adjective Araucanian is

mapuche.