personal union

ally; allied nation

(historical) the Allies

rule, governance

to rule, to govern

multipleness, manyness / (grammar) the plural number

one thing

form; shape / gestalt

age, era, period (of time) / the times, spirit of the age / antiquity / a time in one's life, one's days (in college etc.)

a king, especially one who is not East Asian or was East Asian in pre-imperial times; in China and Vietnam, generally a king before Qin Shi Huangdi who invented the title 皇帝 (kōtei, “huangdi; emperor”); in Korea, one of the many kings before the Korean Empire which was modeled after Japan's; in Japan, one of the rulers before Emperor Jinmu