roar, thunder, boom resound
轟 centers on a deep, powerful, rumbling sound: a roar, thunder, or a booming resonance that fills the air.
轟 combines three 車 (vehicle) characters to suggest the rumbling sound of many wagons or chariots moving together, producing a roar or thunderous noise.
Three 車 (vehicles) piled together create an image of heavy carts rumbling in unison, producing a deafening roar like thunder.
For ゴウ, imagine the roar of three wagons echoing through a deep gorge: gorge -> ゴウ, and the sound booms like thunder.
roaring
sinking instantly (of a ship due to a torpedo attack, bombing, etc.)
thunderous roar; roaring sound
to roar; to thunder; to boom; to rumble; to resound; to reverberate
roar; peal; rumble; booming
to make one's name well known; to gain much fame
detonation
thundering; roaring; rumbling; booming
to make (a thundering sound); to let resound
roaring; thundering; thunderous; deafening; ear-splitting
loud explosion; thunderous blast
todorokite
loud criticism; torrent of criticism; fierce denouncement (from many people); uproarious outcry