A shock, tremor, or vibration—the shaking or oscillation caused by an earthquake, impact, or machinery.
列車が通過するたびに家が震動するので、対策が必要だ。
The house vibrates every time a train passes, so measures are needed.
地震の震動で棚の本が落ちてきた。
Books fell off the shelf because of the tremor from the earthquake.