overkill vs stratospheric

overkill

noun
  • An unnecessary excess of disposal because of too high criteria of inspection. 

  • Destruction beyond what is necessary to kill, especially in murder. 

  • A destructive capacity that exceeds that needed to destroy an enemy; especially with nuclear weapons. 

  • An unnecessary excess of whatever is needed to achieve a goal. 

verb
  • To do something excessive to achieve a goal. 

  • To destroy something with more (nuclear) force than is required. 

  • To dispose of too many items because of too-high criteria of inspection. 

stratospheric

adj
  • Of, relating to, or occurring in the stratosphere (“the region of the uppermost atmosphere”). 

  • Unusually or unreasonably high; astronomical. 

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