rationale vs turn-off

rationale

noun
  • An explanation of the basis or fundamental reasons for something. 

  • A liturgical vestment worn by some Christian bishops of various denominations. 

  • A justification or rationalization for something. 

turn-off

noun
  • A road where one turns off, such as a motorway exit. 

  • Something that repulses, disgusts, or discourages, especially sexually. 

How often have the words rationale and turn-off occurred in a corpus of books? (source: Google Ngram Viewer )