The Dene people ( ) (Dené) are an aboriginal group of First Nations who inhabit the northern boreal and Arctic regions of Canada. The Dené speak Northern Athabaskan languages. Dene is the common Athabaskan word for "people" (Sapir 1915, p. 558). The term "Dene" has two usages. More commonly, it is used narrowly to refer to the Athabaskan speakers of the Northwest Territories and Nunavut in Canada, especially including the Chipewyan (Denesuline), Tlicho (Dogrib), Yellowknives (T'atsaot'ine), Slavey (Deh Gah Got'ine or Deh Cho), and Sahtu (the Eastern group in Jeff Leer's classification; part of the Northwestern Canada group in Keren Rice's classification). But it is sometimes also used to refer to all Northern Athabaskan speakers, who are spread in a wide range all across Alaska and northern Canada. Note that Dene never includes the Pacific Coast Athabaskan or Southern Athabaskan speakers in the continental U.S., despite the fact that the term is used to denote the Athabaskan languages as a whole (the Na-Dene language family). The Southern Athabaskan speakers do, however, refer to themselves with similar words: Diné (Navajo) and Indé (Apache).