detach vs insulate

detach

verb
  • To separate for a special object or use. 

  • To take apart from; to take off. 

  • To come off something. 

insulate

verb
  • To separate, detach, or isolate. 

  • To separate a body or material from others, e.g. by non-conductors to prevent the transfer of electricity, heat, etc. 

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