devious vs person-to-person

devious

adj
  • Roundabout, circuitous, deviating from the direct or ordinary route. 

  • Cunning or deceiving, not straightforward or honest, not frank. 

person-to-person

adj
  • Such that the caller is only connected and charged if the person he specified is available to speak. 

  • Such that the lender and borrower are individuals rather than companies. 

How often have the words devious and person-to-person occurred in a corpus of books? (source: Google Ngram Viewer )