Ezo (also referred to as "Emishi" or "Ebisu") is an appellation for the people who once lived in the eastern and northern areas of what is now Japan, and who were considered by the Japanese to belong to a different ethnic group.
蝦夷（えみし、えびす、えぞ）は、日本列島の東方、北方に住み、日本人によって異族視されていた人々に対する呼称である。