noun
Refers to a deep, resonant, continuous loud sound such as thunder, engines, or a waterfall.
遠くで雷の轟きが聞こえた。
I heard the rumble of thunder in the distance.
飛行機の轟きが空に響いた。
The roar of the airplane echoed through the sky.
noun
Used for a strong, rhythmic physical sensation, especially a heartbeat or pulse, often with emotional intensity.
緊張で心臓の轟きが止まらなかった。
My heart wouldn't stop pounding from nervousness.
The verb form; 轟き is the noun derived from it, focusing on the sound or sensation itself.
Also means a resonant sound, but 響き is broader and can refer to echoes, musical resonance, or influence, while 轟き emphasizes a deep, powerful, often overwhelming noise.
Noun form of the verb 轟く (とどろく), which is of native Japanese origin. The exact derivation is uncertain, but it is likely sound-symbolic, imitating a deep rumbling noise.