The term 'Chief in Importance' is a job description that implies a hierarchical structure. The MAIN person in this structure is the one with the most authority, and is referred to as the 'MAIN' (4 letters). This person is the most important and has the highest level of authority. The 'LEAST' (5 letters) is the person with the LEAST amount of authority and is the lowest in the hierarchy. Lastly, the 'SECONDARY' (9 letters) is the person who is second in command and has the second highest level of authority.