immune vs liable

immune

adj
  • Exempt; not subject to. 

  • Not vulnerable. 

  • Of or pertaining to the immune system. 

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

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

verb
  • To make immune. 

liable

adj
  • exposed to a certain contingency or causality, more or less probable. 

  • bound or obliged in law or equity; responsible; answerable. 

  • subject; susceptible. 

  • likely. 

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