(historical) province (first-level administrative divisions of Japan from 7th Century to 1868)

system; institution

politics

system, organization

State of Japan (de facto official name of Japan, 1947 to present)

(rare) State of Japan (de facto official name of Japan, 1947 to present)

part, portion / copy of a newspaper or book

a land, a large place / a country in general, a region / a country as in a nation, a state / the office of emperor, the crown; affairs of state / a province of ancient Japan

system

(archaic) antique, old-fashioned / (colloquial) ancient