it depends actually... A King rules over an kingdom. I'm pretty sure an Emperor would rule over an empire, but I could be wrong...
"Royal", "his Majesty", "Regent" or "his highness"
monarcy
This type of government is called a monarchy
Kingdom is the geographical boundaries where a King reigns while an Empire is reign over many regions or other kingdoms brought under reign outside the kingdom by an Emperor.
The analogy king is to reigns as judge is to gavel. A king uses reigns to control his kingdom, while a judge uses a gavel to maintain order and make decisions in a courtroom.
One of the reasons the2 kings compare is because they are both empires in bce!
The Alectrix - 2013 Handing Over the Reigns 1-1 was released on: USA: June 2013
an emperor
Phil Bengston
get the new troll kingdom.
The Persian and Romanian Empires
Prince Charles