conundrum vs grabber

conundrum

noun
  • A difficult question or riddle, especially one using a play on words in the answer. 

  • A difficult choice or decision that must be made. 

grabber

noun
  • One who, or that which, grabs or seizes. 

  • A machine in an amusement arcade containing prizes which the player must attempt to pick up with a mechanical grabbing arm. 

  • A line of dialogue, etc. that captures the viewer's attention. 

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