linguistic:paraphrasing, stylistic:tone, stylistic:style_transfer
Name and terminology

The realm's official name was in German: Österreichisch-Ungarische Monarchie and in Hungarian: Osztrák–Magyar Monarchia (English: Austro-Hungarian Monarchy), though in international relations Austria–Hungary was used (German: Österreich-Ungarn; Hungarian: Ausztria-Magyarország). The Austrians also used the names k. u. k. Monarchie (English: k. u. k. monarchy) (in detail German: Kaiserliche und königliche Monarchie Österreich-Ungarn; Hungarian: Császári és Királyi Osztrák–Magyar Monarchia) and Danubian Monarchy (German: Donaumonarchie; Hungarian: Dunai Monarchia) or Dual Monarchy (German: Doppel-Monarchie; Hungarian: Dual-Monarchia) and The Double Eagle (German: Der Doppel-Adler; Hungarian: Kétsas), but none of these became widespread either in Hungary or elsewhere.

The realm's full name used in internal administration was The Kingdoms and Lands Represented in the Imperial Council and the Lands of the Holy Hungarian Crown of St. Stephen.

From 1867 onwards, the abbreviations heading the names of official institutions in Austria–Hungary reflected their responsibility:

Following a decision of Franz Joseph I in 1868, the realm bore the official name Austro-Hungarian Monarchy/Realm (German: Österreichisch-Ungarische Monarchie/Reich; Hungarian: Osztrák–Magyar Monarchia/Birodalom) in its international relations. It was often contracted to the "Dual Monarchy" in English or simply referred to as Austria.