noisy, boisterous
囂 centers on loud, chaotic noise: a clamor of voices or boisterous uproar. The given meanings both describe a state of being noisy and disorderly.
囂 is composed of 頁 (head) between two 吅 (doubled mouths), suggesting many voices around a head, hence noise and clamor. The exact historical development is uncertain, but the component arrangement visually conveys uproar.
Picture a head (頁) surrounded by multiple mouths (吅) above and below, all shouting at once. The overlapping voices create a noisy, boisterous scene.
For ゴウ, imagine the loud noise of a gong being struck repeatedly: gong -> ゴウ, and the clamor fills the air like the many mouths in 囂.