1 point: The natural rate of unemployment is made up of frictional unemployment . . .
1 point: . . . plus structural unemployment.
1 point: Cyclical unemployment is the deviation of the actual rate of unemployment from the natural rate. Or, cyclical unemployment is the difference between the actual and natural rates of unemployment.
1 point: Changes in labor force characteristics
1 point: Changes in labor market institutions such as unions
1 point: Changes in government policies