Translation guide
The English word 'empire' refers to a large, powerful political unit, often ruled by an emperor or empress, or a dominant organization. In Japanese, the most common equivalent is 帝国 (ていこく), but other terms exist for specific historical empires or metaphorical uses.
A large, sovereign state ruled by an emperor or empress, often consisting of multiple territories.
The standard term for 'empire' in a political sense. Used for historical empires like the Roman Empire or the British Empire.
The Roman Empire had vast territories.
The British Empire once had colonies all over the world.
A literary or historical term for an empire, often used in pre-war Japanese contexts to refer to Japan itself. Rare in modern usage.
The Empire of Great Japan (historical name)
A large, powerful corporation or group of companies controlled by one person or entity.
A domain or sphere of influence, not necessarily political or commercial.
While 帝国 can be used metaphorically, it may sound grandiose or unnatural in casual contexts. For describing a large company, 大企業 (だいきぎょう, large corporation) or グループ (group) might be more natural unless emphasizing the 'empire' aspect.
His corporate empire spans the globe.