Valor is honor plus dignity. It’s gallant bravery and strength, especially on the battlefield or in the face of danger. Saint George displayed valor when he finally slayed the dragon. It’s a trait fit for a hero.
Valor comes from the Latin valorem for “strength, moral worth,” with the sense of “courage” added later. Valor is often displayed in the face of something designed to crush it, like a battle in a war, and it is often rewarded with the conferring of a medal. Valor is a word associated with war heroes and knights of yore, but anyone who faces death and doesn’t look away displays valor.