critter vs mon

critter

noun
  • A creature, an animal. 

mon

noun
  • A creature in a video game, usually one which is captured, trained up and used in battles. 

  • A colloquial means of address of man in places such as Jamaica and Shropshire in England. 

  • A video game or anime in which catching and battling creatures is an important element. 

  • The former currency of Japan until 1870, before the yen. 

  • The badge or emblem of a Japanese family, especially a family of the ancient feudal nobility; typically circular and consists of conventionalized forms from nature. 

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