explicit vs person-to-person

explicit

adj
  • Very specific, clear, or detailed. 

  • Containing material (e.g. language or film footage) that might be deemed offensive or graphic. 

noun
  • The final few words of a text. 

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 explicit and person-to-person occurred in a corpus of books? (source: Google Ngram Viewer )