eduction vs ergotism

eduction

noun
  • The act of educing, of deducing: deduction. 

  • A process by which the Earth's crust spreads sideways and exposes deep-seated rocks. 

  • The result of educing; something which has been educed; inference, deduction. 

ergotism

noun
  • A logical deduction. 

  • The usage of ergot infested grain to poison animals. 

  • The effect of long-term ergot poisoning, traditionally due to the ingestion of the alkaloids produced by the fungus Claviceps purpurea which infects rye and other cereals, and more recently by the action of a number of ergoline-based drugs, consisting of convulsive and gangrenous symptoms. 

  • The plant disease caused by ergot. 

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