Roles of Organizational and Leadership Experts

Organizational and leadership experts can perform at least two different roles. Describe their roles.

What is similar about a consultant and a coach and the process that each uses? What is different? Can the same person perform both? Can the same person perform both in the same organization? Are there other similar roles (e.g., counselor, advisor, mentor, etc.)? How do those roles compare and contrast to the coaching role? Leadership lessons you can learn? Provide your thoughts.