How do you describe a hero?

Brave, Heroic, Courageous, Unselfish, Relentless, Unstoppable, Fearless, Determined, and Caring
I would define a hero as someone who is willing to risk their lives to save someone. Some people think that the only type of heroes there are, are the ones like superman, spiderman, batman, etc. Well, I don't think that is true. You can have amazing powers, and amazing abilities, but if you waste them, and use them for your own selfishness, then that doesn't make you a hero. Although, if you use you're abilities to help other people, then you are a hero.