noun
personal union
A political arrangement where two or more separate states share the same monarch while remaining distinct in their laws and institutions. This is a technical term in history and political science.
イギリスとハノーヴァーは18世紀に同君連合を形成していた。
Britain and Hanover formed a personal union in the 18th century.
同君連
A personal union refers to a system where multiple countries share the same monarch.