Monarchy (noun)

1. A system of government in which a country is ruled by a king, queen, or other sovereign ruler.
2. The reign or rule of a monarch.

Origin:

Late 16th century: from french monarchie, from monarque "monarch".

Examples:

1. The United Kingdom is a monarchy with a constitutional system of government.
2. The Spain is a monarchy with a parliamentary system of government.
3. The monarchy has been in power for over a century.
4. The monarchy has a ceremonial role in government.
5. The monarchy has a strong cultural and historical significance.