What do the Different Classes, from Social Class, mean?

-AB: Higher, Senior and Professional Occupations such as Banker, Director or Doctor -C1: Junior Managerial, Supervisory or Administrative such as Teacher, Social Worker or Office Manager -C2: Skilled Labour Jobs like Plumber, Mechanic or Train Driver -DE: Semi-Skilled, Unemployed or Unskilled Jobs such as Bar Staff, Call Centre Staff or the Unemployed