godan verb (-ru), intransitive verb
become quiet; quiet down
Describes a noisy or active situation naturally settling into silence or stillness. Often used with 静まる.
夜が更けて、街が静まった。
As the night deepened, the town grew quiet.
子供たちが寝て、家の中が静まった。
The children went to sleep and the house became quiet.
godan verb (-ru), intransitive verb
Used for strong emotions, pain, excitement, or unrest losing intensity and settling. 鎮まる is especially natural for this sense.
騒ぎがようやく鎮まった。
The commotion finally died down.
痛みが鎮まるまで横になっていた。
I lay down until the pain subsided.