Knights' titles are a form of honorific given to individuals who have been knighted by a monarch or other political leader. The most common title is 'SIR, ' which is a four-letter word that is used to address a knighted man. Other titles include 'DAME' for a knighted woman, and 'LORD' or 'LADY' for a baron or baroness. These titles are typically bestowed upon individuals in recognition of their service to the country or for their contributions to society.