decoy vs land mine

decoy

noun
  • A person or object meant to lure somebody into danger. 

  • A real or fake animal used by hunters to lure game. 

  • Deceptive military device used to draw enemy attention or fire away from a more important target. 

verb
  • To act as, or use, a decoy. 

  • To lead into danger by artifice; to lure into a net or snare; to entrap. 

land mine

noun
  • A critical subject or situation with concealed or unpredictable implications. 

  • A piece of exercise device consisting of a pivoting tube attached to the ground to which a barbell can be fitted to lift it off the ground. 

  • A mine that is placed on land and designed to explode when stepped upon or touched. 

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