The term 'PART OF CEO' can be solved by two crossword solutions: EXEC (4 letters) and CHIEF (5 letters). The term 'PART OF CEO' refers to the roles that are part of a CHIEF Executive Officer (CEO). An EXEC is an executive, which is a person who is in charge of a certain area of a business or organization. A CHIEF is a leader or head of a certain department or organization. Both roles are part of the overall role of a CEO, who is responsible for the overall direction and management of a company or organization.