Tremor
Part of speech: noun
Definition: A shake, quiver, or vibration. An earthquake.
Part of speech: verb
Definition: To shake or quiver excessively and rapidly or involuntarily; to tremble.
Quake
Part of speech: noun
Definition: A trembling or shaking.An earthquake, a trembling of the ground with force.
Part of speech: verb
Definition: To tremble or shake.To tremble or shake with fear.