Russia - ruble, Korea - ?

WON
List of words for the clue Russia - ruble, Korea - ? from the crossword:
KOPECK KOPEK KOPEKS CCCP YEN THAILAND SWITZERLAND SHILLING SHEQEL RUPEE ROUBLE PESO MEXICO DOLLAR CROATIAN AUSTRALIA YALU RHEE MASH
WordClue
YENRussia - ruble, Japan - ?
EUROKorea - won, France - ?
PESORussia - ruble, Mexico - ?
BUSANsecond largest city of South Korea
JAPANwon - Korea, yen - ?
KAZANcity in Russia
KNYAZArabia - emir, Russia - ?
KURSKcity in Russia
RUBLEUkraine - hryvnia, Russia - ?
RUPEERussia - ruble, India - ?
SEOULcapital of South Korea
SOCHIcity in Russia
DOLLARRussia - ruble, Australia - ?
MEXICOruble - Russia, peso - ?
RUSSIAyen - Japan, ruble - ?
SHEQELRussia - ruble, Israel - ?
UKRAINEruble - Russia, hryvnia - ?
THAILANDruble - Russia, baht - ?
PYONGYANGcapital of Nort Korea
SWITZERLANDruble - Russia, franc - ?
YENRussia - ruble, Japan - ?
PESORussia - ruble, Mexico - ?