Throughout history there have been a number of leaders and heroes that have contributed to the world we live in.

A leader is someone who has the authority to tell a group of people what to do. In the simplest sense, a leader is somebody who people follow. 

A hero is a person who is admired for their courage, outstanding achievements, or noble qualities. Heroes can be fictional or real people.  

A heroine is a woman admired for her courage, outstanding achievements, or noble qualities. Heroines can be fictional or real people.