purpose vs turn-off

purpose

noun
  • meaning for existing or doing something. 

  • Resolution; determination. 

  • Function, role. 

  • The end for which something is done, is made or exists. 

verb
  • To have or set as one's purpose or aim; resolve to accomplish; intend; plan. 

  • To have (an) intention, purpose, or design; to intend; to mean. 

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 purpose and turn-off occurred in a corpus of books? (source: Google Ngram Viewer )