A King is a head of state, who may or may not, depending on the style of government of a nation, exercise monarchal powers over a territory, usually called a Kingdom or a realm. A King is the second highest noble title, surpassed only by emperor. A female monarch is a queen regnant; the term "queen" may refer to one ruling in her own right, or the wife of the King. The husband of a queen regnant is a prince consort or a King consort. A King or queen may wear a crown or carry other regalia (symbols of office).   Wikipedia