QUAKE v. 2 definitions
To shake, vibrate, or quiver, either from not being solid, as soft, wet land, or from violent convulsion of any kind; as, the earth quakes; the mountains quake. " Over quaking bogs." Macaulay.
SHOCK n.
A quivering or shaking which is the effect of a blow, collision, or violent impulse; a blow, impact, or collision; a concussion; a sudden violent impulse or onset. These strong, unshaken mounds resist the shocks Of tides and seas tempestuous. Blackmore. He stood the shock of a whole host of foes. Addison.…