collecting vs procurement

collecting

noun
  • A hobby including seeking, locating, acquiring, organizing, cataloging, displaying, storing, and maintaining whatever items are of interest to the individual collector. 

procurement

noun
  • The purchasing department of a company. 

  • The act of procuring or obtaining; obtainment; attainment. 

  • Efficient contrivance; management; agency. 

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