grenade vs land mine

grenade

noun
  • A small explosive device, designed to be thrown by hand or launched using a rifle, grenade launcher, or rocket. 

  • An unattractive girl. 

  • A charge similar to a fireball, and made of a disc-shaped bomb shell, but with only one set of flames at the top. 

verb
  • To use grenade(s) upon. 

land mine

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

  • 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 critical subject or situation with concealed or unpredictable implications. 

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