Volute
Part of speech: noun
Definition: The spiral curve on an Ionic capital. The spirls or whorls on a gastropod's shell. Any marine gastropod of the (super)family Volutidae.
Whorl
Part of speech: noun
Definition: A pattern of concentric circles.A circle of three or more leaves, flowers, or other organs, about the same part or joint of a stem.A volution, or turn, of the spire of a univalve shell.A flywheel, a weight attached to a spindle, cf. 1460.