They showed 'courage under fire'. [=they were brave while they were being shot at or while they were being strongly criticized]
He has 'the courage of his convictions'. [=he is not afraid to do what he believes is right]
I finally worked/got up the 'courage' [='nerve'] to tell him the bad news.
(..) please do not do this. I did not want to die a coward. Apparently I do not want to die at all. It takes courage to admit fear. And to admit a mistake. I came here to tell you that I was wrong. I was wrong (..)2015 TvShow: Game of Thrones Title: Kill the Boy Season: 5 Episode 5