Exercise your brain, games you didn’t know existed to fight brain decline and ageing.
Revolution: orbital motion about a point especially as distinguished from axial rotation.
The planetary revolution about the sun. A turning or rotation or motion about an axis. A single complete cycle of such orbital or axial motion.
The overthrow of one government and its replacement with another, a sudden or momentous change in a situation: the revolution in computer technology.
Geology: a time of major crustal deformation, when folds and faults are formed.
The American Heritage Dictionary of the English language