uninvestigated vs untouched

uninvestigated

adj
  • Not investigated. 

untouched

adj
  • Not read or examined. 

  • Remaining in its original, pristine state, undamaged; not altered. 

  • Not eaten. 

  • Not having come in contact. 

  • Not talked about. 

  • Not influenced, affected or swayed. 

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