crossword vs guessing game

crossword

noun
  • A word puzzle in which interlocking words are entered usually horizontally and vertically into a grid based on clues given for each word. 

  • The grid of such a puzzle 

guessing game

noun
  • 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. 

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

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