management vs manpower

management

noun
  • Administration; the use of limited resources combined with forecasting, planning, leadership and execution skills to achieve predetermined specific goals. 

  • Judicious use of means to accomplish an end. 

  • The executives of an organisation, especially senior executives. 

manpower

noun
  • The total number of all available workers; the workforce. 

  • The power exerted by a single person (analogous to horsepower.) 

How often have the words management and manpower occurred in a corpus of books? (source: Google Ngram Viewer )