insulation vs self-sufficiency

insulation

noun
  • The state of being insulated; detachment from other objects; isolation. 

  • Any of a variety of materials designed to reduce the flow of heat, either from or into a building. 

  • The act of separating a body from others by nonconductors, so as to prevent the transfer of electricity, heat, or sound 

  • The state of a body so separated. 

  • a medium in which it is possible to maintain an electrical field with little supply of energy from additional sources. 

  • The act of insulating; detachment from other objects; isolation. 

self-sufficiency

noun
  • The condition of being self-sufficient. 

How often have the words insulation and self-sufficiency occurred in a corpus of books? (source: Google Ngram Viewer )