pelmanism vs realization

pelmanism

noun
  • A system of training to improve the memory. 

  • A memory card game in which a pack of cards is spread out face-down and players try to turn up pairs with the same symbol. 

realization

noun
  • An act of figuring out or becoming aware. 

  • The act of making real. 

  • The result of an artistic effort. 

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