to be brave is to do whatever you dare not do in daily life, to have the courage to try despite the failure and bitterness, to face your mistakes and to make progress..
Courage is that you do what you are afraid to do ordinarily, be brave to attempt without fearing of failures and pains and to face your own mistakes frankly, be active and keep forgoing ahead.
Courage is sth that can make you do things you dared not, sth makes you try, fearing no failure or hardship, and sth make you confront with mistakes bravely and be aggressive all the same.
The guts shoud have the courage to do things, which you dare not do normally. Try it fearlessly,and don't be afraid of the failure or hardship Face your own mistakes bravely,and go ahead vigorously.