intellection vs pelmanism

intellection

noun
  • A particular act of grasping by means of the intellect. 

  • The mental content of an act of grasping by means of the intellect, as a thought, idea, or conception. 

  • The mental activity or process of grasping with the intellect; apprehension by the mind; understanding. 

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. 

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