The term "King" refers to a male ruler, usually with a hereditary right to rule over a particular territory or country. In its most common usage, it describes someone who holds ultimate authority and power within their realm, making decisions on behalf of the people they govern. Historically, kings have held varying degrees of influence and control over their subjects depending on factors such as political systems, cultural norms, and economic conditions. In some cultures, a queen may also be referred to as a king if she holds the position of ruler.