crater vs river basin

crater

noun
  • 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. 

  • Any large, roughly circular depression or hole. 

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

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

verb
  • To form craters in a surface. 

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

  • To crash or fall. 

river basin

noun
  • An extent of land where water from rain or snow melt drains downhill into a river or series of rivers. 

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