human resources vs organization

human resources

noun
  • The personnel employed in an organization. 

  • The personnel department of an organization, dealing with the recruitment, administration, management and training of employees; abbreviated as HR. 

organization

noun
  • A group of people or other legal entities with an explicit purpose and written rules. 

  • A major league club and all its farm teams. 

  • The quality of being organized. 

  • A group of people consciously cooperating. 

  • The way in which something is organized, such as a book or an article. 

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