Etymology of the Korean currencies
The won is the currency of both North and South Korea. "Won" is a cognate of the Chinese currency unit, the yuan (//), and the Japanese currency unit, the yen (; ¥), meaning "round object". The won is subdivided into 100 jeon ().
North Korean calendar
The Democratic People's Republic of Korea calendar, DPRK calendar, or "Juche" calendar (), named after the "Juche" ideology, is the system of year-numbering used in the Democratic People's Republic of Korea.