Someone who coordinates and oversees the work of other people in order to accomplish organizational goals.
First line managers
The lowest level of management who manage the work of nonmanagerial employees and typically are directly or indirectly involved with producing the organization’s products or servicing the organization’s customers.
Middle Managers
Managers between the lowest level and top levels of the organization who mange the work of first line managers.
Top managers:
Managers at or near the upper levels of the organization structure who are responsible for making organizationwide decsions and establishing the goals and plans that affect the entire organization.
Management:
Coordination and oversight of the work activities of others so that their activities are completely efficiently and effectively.