Multiattack - The giant makes two greataxe attacks.
Greataxe - Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 25 (3d12 + 6) slashing damage.
Rock - Ranged Weapon Attack: +9 to hit, range 60/240 ft., one target. Hit: 28 (4d10 + 6) bludgeoning damage.