ROAR v. 2 definitions
make a loud, confused sound, as winds, waves, passing vehicles, a crowd of persons when shouting together, or the like. The brazen throat of war had ceased to roar. Milton. How oft I crossed where carts and coaches roar. Gay.
SHOUT v.
, as in joy, triumph, or exultation, or to attract attention, to animate soldiers, etc. Shouting of the men and women eke. Chaucer. They shouted thrice: what was the last cry for Shak. To shout at, to utter shouts at; to deride or revile with shouts.