Peerage refers to the system of titles and ranks in the nobility, primarily found in countries like England and Scotland. It includes various ranks such as duke, marquess, earl, viscount, and baron. These titles can be hereditary, passed down through generations, or granted by a monarch for specific services. The peerage system plays a significant role in the social and political structure of these countries. Members of the peerage often have certain privileges, such as the right to sit in the House of Lords, the upper chamber of the Parliament in England.