R and D vs enterprise

R and D

enterprise

verb
  • To treat with hospitality; to entertain. 

  • To undertake; to begin and attempt to perform; to venture upon. 

  • To undertake an enterprise, or something hazardous or difficult. 

noun
  • Active participation in projects. 

  • A willingness to undertake new or risky projects; energy and initiative. 

  • An undertaking, venture, or project, especially a daring and courageous one. 

  • A company, business, organization, or other purposeful endeavor. 

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