Revolvency :: Revolvency (n.) The act or state of revolving; revolution.
Revolver :: Revolver (n.) One who, or that which, revolves; specifically, a firearm ( commonly a pistol) with several chambers or barrels so arranged as to revolve on an axis, and be discharged in succession by the same lock; a repeater..
Revolving :: Revolving (a.) Making a revolution or revolutions; rotating; -- used also figuratively of time, seasons, etc., depending on the revolution of the earth..