diastrophism;  movement and deformation of the earth's crust;  upheaval (e.g. in politics);  seismic shift;  earthshaking changes
 volatility;  degree of variability;  rate of fluctuation;  regulation
 floating exchange rate system
 range of fluctuation;  fluctuation margin
 nominal verb;  verbal noun
 floating exchange rate system;  flexible exchange rate system
 transmission delay variation
 elevation fluctuation vector
 Global Change Observation Mission;  GCOM
 coefficient of variation;  variation coefficient
 verb ending in "zu" or "zuru" (predecessor of modern -jiru verbs)
 variable interest rate government bonds