Full employment is not the same as zero unemployment because there are different types of unemployment, and some are unavoidable or even necessary for a functioning labor market. At any given time, jobs are being created and destroyed as industries evolve, and the transition from old jobs to new is not seamless. A lot of people think full employment means that no one is unemployed, but that is not how economists use this term. Therefore, the term full employment refers to a situation in which there is no cyclical unemployment. By contrast, zero unemployment would mean that there is no structural or frictional unemployment.