The phonology of the Ojibwe language (also Ojibwa, Ojibway, or Chippewa, and most commonly referred to in the language as Anishinaabemowin) varies from dialect to dialect, but all varieties share common features. Ojibwe is an indigenous language of the Algonquian language family spoken in Canada and the United States in the areas surrounding the Great Lakes, and westward onto the northern plains in both countries, as well as in northeastern Ontario and northwestern Quebec. The article on Ojibwe dialects discusses linguistic variation in more detail, and contains links to separate articles on each dialect. There is no standard language and no dialect that is accepted as representing a standard. Ojibwe words in this article are written in the practical orthography commonly known as the Double vowel system.