procurement vs proxenetism

procurement

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

  • The purchasing department of a company. 

  • Efficient contrivance; management; agency. 

proxenetism

noun
  • The negotiation or facilitation of a transaction between a sex worker and a customer. 

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