Russia - tsar, Japan - ?

EMPEROR
List of words for the clue Russia - tsar, Japan - ? from the crossword:
INDIA PHARAOH MAHARAJA EGYPT IVAN UKASE TSE ANASTASIA CZAR YEN RUBLE ASIA ASIAN COUNTRY TZAR SOVEREIGN RULER QUEEN POTENTATE
WordClue
TGVJapan - Shinkansen, France - ?
WONJapan - yen, Korea - ?
YENRussia - ruble, Japan - ?
BAHTJapan - yen, Thailand - ?
KOBEcity in Japan
PESOJapan - yen, Mexico - ?
TSARJapan - emperor, Russia - ?
EGYPTtsar - Russia, pharaoh - ?
FRANCJapan - yen, Switzerland - ?
INDIAtsar - Russia, maharaja - ?
JAPANtsar - Russia, emperor - ?
KOREAyen - Japan, won - ?
KYOTOcity in Japan
MAPLEJapan - cherry, Canada - ?
OSAKAcity in Japan
RUBLEJapan - yen, Russia - ?
TOKYOcapital of Japan
RUSSIAemperor - Japan, tsar - ?
PHARAOHRussia - tsar, Egypt - ?
MAHARAJARussia - tsar, India - ?
MAHARAJARussia - tsar, India - ?
SLAVSRussians or Poles