Competence peculiar to someone who leads people, groups, or organizations with a sense of responsibility and supports their action to achieve specific goals, consistent with ones of the group and/or organization they are part of.

If you want to deepen your understanding of leadership, I am sure these links will stimulate your interest:

The definitions you find in the glossary claim to be neither exhaustive nor rigorous: they are reported here to help people who want to know more about the meaning of specific terms or topics.