insulate vs mingle

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. 

mingle

noun
  • The act of informally meeting numerous people in a group 

verb
  • To associate or unite in a figurative way, or by ties of relationship 

  • to cause or allow to intermarry 

  • To become mixed or blended. 

  • to intermarry. 

  • To socialize with different people at a social event. 

  • To deprive of purity by mixture; to contaminate. 

  • To make or prepare by mixing the ingredients of. 

  • To intermix; to combine or join, as an individual or part, with other parts, but commonly so as to be distinguishable in the product 

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