Management
Part of speech: noun
Definition: administration; the process or practice of managing. The executives of an organisation, especially senior executives. Judicious use of means to accomplish an end.
Example sentence: Management is doing things right; leadership is doing the right things.
Operation
Part of speech: noun
Definition: The method by which a device performs its function.The method or practice by which actions are done.A planned undertaking.A business or organization.a surgical procedure.a procedure for generating a value from one or more other values (the operands; the value for any particular operands is unique)a military campaign (w:Operation Desert Storm)