(monarchy) Japanese emperors and their 皇族 (kōzoku, “imperial relatives”)

Imperial Household Agency, an agency of the Japanese government in charge of matters of state related to the Emperor and the Imperial Family

support / hold in check / provide for, maintain, support

get stuck, get jammed

important, significant

importance, consequence, significance

engine, machine / body organ / organization, institute, agency, authority, establishment / facility

Short for 日本国 (Nihon-koku): Japan (a country and archipelago in East Asia) / a surname

Japan

(archaic) Japan