hydrophobia vs sanity

hydrophobia

noun
  • An aversion to water, as a symptom of rabies; the disease of rabies itself. 

  • A morbid fear of water; aquaphobia. 

sanity

noun
  • The condition of being sane. 

  • Reasonable and rational behaviour. 

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