What are titles for monarchs?

Titles for monarchs vary by culture and tradition, but some common ones include "King" and "Queen" for sovereign rulers, "Emperor" and "Empress" for those ruling over large territories or multiple nations, and "Duke" or "Duchess" for regional nobility. Other titles may include "Sultan," "Tsar," and "Shah," depending on the historical and cultural context. Monarchs may also hold additional titles that signify their specific roles or territories, such as "Czarina" for a female Russian monarch or "Crown Prince" for an heir apparent.