The government agency that produces the Employment Situation report of which the unemployment rate is one statistic.
Unemployment that follows the business cycle; falls as the economy expands and increases as the economy slows.
Unemployment = natural separation from employment; underlies the "natural rate of unemployment." Employees looking for positions that are available.
The unemployment level consistent with full employment; typically considered to be 5% and attributed to frictional and structural unemployment.
Unemployment resulting from changes in the structure of the economy.