kingdom (nation having as supreme ruler a king and/or queen) / kingdom

king and queen; royal couple

United Kingdom (a country in Western Europe)

(formal) Kingdom of the Netherlands (a country in Western Europe)

(historical) Crown of the Kingdom of Poland (a former country in Europe, political and legal idea formed in the Poland in the 14th century, assuming unity, indivisibility and continuity of the state) / (historical) Congress Poland (a former country in Europe, Polish state established 1815 and ruled by the Russian tsar)

(historical) Congress Poland (a former country in Europe, Polish state established 1815 and ruled by the Russian tsar)

(Christianity) Kingdom of Heaven (concept of heaven as a hierarchical dominion with God at the top and a court of saints, archangels, and angels)

(Christianity) Kingdom of Heaven (concept of heaven as a hierarchical dominion with God at the top and a court of saints, archangels, and angels)

(idiomatic) my kingdom for a horse (speaker is willing to sacrifice anything to obtain a seemingly unimportant item that becomes invaluable at a critical moment)