care for vs insulate

care for

verb
  • To attend to the needs of, especially in the manner of a nurse or personal aide. 

  • To like or appreciate; to consider to be appealing, tasteful, or suitable. 

insulate

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

  • To separate, detach, or isolate. 

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