(Source: HBR-Jun 2016)
Some important capture from the article:
management behaviors dominantly center on the manager: gaining trust, being accountable, being optimistic, being visible, and providing recognition and reward. Leadership behaviors focus on the staff: trust people, engage people, motivate and encourage people.
Here is another distinction:
“Managers” delegated largely as a way to increase efficiency; “leaders” delegated as a way to empower subordinates.
The crucial difference – maybe the only difference — is the focus of the person carrying them out. Focus more on people and you’ll demonstrate leadership, more on results and you’ll perform management; but what you’re actually doing may not be that different.