crater vs strip mine

crater

noun
  • The pit left by the explosion of a mine or bomb. 

  • Any large, roughly circular depression or hole. 

  • The basin-like opening or mouth of a volcano, through which the chief eruption comes; similarly, the mouth of a geyser, about which a cone of silica is often built up. 

  • A hemispherical pit created by the impact of a meteorite or other object. 

verb
  • To form craters in a surface. 

  • To collapse catastrophically; to become devastated or completely destroyed. 

  • To crash or fall. 

strip mine

noun
  • A mine where the material above the ore is removed (stripped) to expose it for removal and use. 

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