what is courage

I guess courage is when a person, will do something even if they are scared. I don't really know what kinds of people have courage, I guess everyone has it it's where or not you use your courage. I always feel like I don't have courage, but I do I am just to scared to use it, to scared to stand up for my self and others. I want to share my ideas, but people always make fun of them so I don't share, I don't stand up to people who tease me, which is why a lot of people think I am a loser.