Definitions: role, supervisor, manager.

Mintzberg's (1973) 10 roles:

INTERPERSONAL CATEGORY (Provides information, Accepts feedback)
ROLES: Figurehead, Leader, Liaison

INFORMATIONAL CATEGORY (Processes information, Provides feedback)
ROLES: Monitor, Disseminator, Spokesperson

DECISIONAL CATEGORY (Uses information, Provides feedback)
ROLES: Entrepreneur, Disturbance Handler, Resources Allocator, Negotiator