immune vs isolated

immune

adj
  • Of or pertaining to the immune system. 

  • Exempt; not subject to. 

  • Not vulnerable. 

  • Protected by inoculation, or due to innate resistance to pathogens. 

verb
  • To make immune. 

noun
  • A person who is not susceptible to infection by a particular disease 

isolated

adj
  • Which has been extracted from the organism. 

  • Placed or standing apart or alone; in isolation. 

  • Affecting 10 percent to 20 percent of a forecast zone. 

  • Happening or occurring only once. 

  • Such that no pawn of the same color is in an adjacent file. 

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