The term leadership was coined by the American Harvard professor John P. Kotter.
He distinguished managers, whom he described as administrators, from leaders, who led companies and employees with vision rather than strict work processes. In increasingly complex and international companies and markets, it can be an advantage for managers to break away from familiar patterns and respond more flexibly to change through leadership.
However, the hard facts of a company should not be forgotten above the visions; a certain degree of "manager" should always be retained. Communication and your own communication style have a strong influence on whether you are perceived and accepted as a manager or a leader.