The Chūgoku dialect is a group of the Japanese dialects spoken in most of the Chūgoku region and in the northwestern Kansai region. It may be separated into two groups according to the form of the copula.copula ja group Aki also known as Hiroshima dialect Bingo dialect Fukuyama dialect (Fukuyama) Okayama dialect Yamaguchi also known as Chōshū dialect copula da group Iwami dialect ja is also used in western Iwami region. Inshū, also known as Tottori dialect Tajima dialect Tango dialect