enigma vs guessing game

enigma

noun
  • Mysteriousness; obscurity; lack of clarity. 

  • A species of grasshopper, Oedaleonotus enigma. 

  • A riddle, or a difficult problem. 

  • The Talaud kingfisher, Todiramphus enigma. 

  • A rare species of moth, Heliothis enigma. 

  • A style of literature characterized by obscurity and hints of transcendental meaning. 

  • Something or someone puzzling, mysterious or inexplicable. 

  • A protein with three LIM domains (a conserved cysteine- and histidine-rich structure of two adjacent zinc fingers) at the C terminus that regulates protein phosphorylation. 

  • Riddles and puzzles, collectively. 

guessing game

noun
  • A situation in which there is insufficient information, requiring participants to rely on conjecture. 

  • Any game the object of which is for a player or players to guess a word, etc, for which the other player or players provide clues. 

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