immunity vs oasis

immunity

noun
  • An exemption from specified duties, such as payments or services. 

  • An exemption from penance. 

  • An exemption given to a player from losing or being withdrawn from play. 

  • A resistance to a specific thing. 

  • An exemption from prosecution. 

  • Protective resistance against disease. 

oasis

noun
  • A spring of fresh water, surrounded by a fertile region of vegetation, in a desert. 

  • A quiet, peaceful place or situation separated from surrounding noise or bustle. 

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