empire
This word carries a heavy weight of power and expansion. It suggests a central point of control that radiates outward, absorbing smaller territories or businesses. There is an inherent sense of scale and dominance that distinguishes it from a kingdom or a company.
Countable when referring to specific historical political entities like the British Empire. Uncountable when referring to the general concept of imperial rule and expansion.
Meanings
A large group of states or countries under a single supreme authority.
"The Roman Empire spanned three continents."
A large commercial organization or a group of companies controlled by one person or group.
"He built a vast real estate empire in the nineties."
Examples
The British empire once covered a quarter of the globe.
The tech mogul expanded his media empire into the gaming industry.