pelmanism vs reminisce

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. 

reminisce

noun
  • An act of reminiscence. 

verb
  • To recall the past in a private moment, often fondly or nostalgically. 

  • To talk or write about memories of the past, especially pleasant memories. 

  • To remember fondly; to reminisce about. 

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