Chugoku

Southwest region of Honshu island, Japan, area 31,881 sq km/12,309 sq mi; population (2000 est) 7,732,000. The chief city is Hiroshima. Citrus and grapes are grown in the region. Formerly rich fishing grounds have been damaged by industrial pollution
Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0025528.html

Chugoku

The western arm of Honshu: Nagato, Suo, Aki, Iwami, Bingo, Izumo, Hoki, Bitchu, Bizen, Mimasaka, Harima, and Tajima. Chugoku can also be found in reference to China.
Found on http://www.samurai-archives.com/vocab.html
No exact match found