A monarch is the head of a monarchy, a form of government where ultimate authority is enshrined within one person: the monarch. Male monarchs are often called kings, and female ones queens, but can they also be princes/princesses, emperors/empresses and even popes. The monarch usually inherits their position, but there have been elected monarchs. The level of power a monarch holds can vary widely, from “absolute” to them simply being a national figurehead.
Monarchy in More Depth
Current European Monarchies
Lists of European Rulers, Including Monarchs.
Examples: “A monarchy is a form of government in which total sovereignty is invested in one person, a head of state called a monarch, who holds the position until death or abdication.”