cyclone vs ozone

cyclone

noun
  • Such weather phenomenon occurring in the South Pacific and Indian Ocean 

  • A weather phenomenon consisting of a system of winds rotating around a center of low atmospheric pressure 

  • A cyclone separator; the cylindrical vortex tube within such a separator 

  • A low pressure system. 

  • The more or less violent, small-scale circulations such as tornadoes, waterspouts, and dust devils. 

  • A strong wind. 

verb
  • To storm wildly; to be in a frenzy. 

  • To whirl in spirals as a result of a cyclone or whirlwind-like force. 

  • To separate using a cyclone separator. 

  • To storm as a cyclone. 

ozone

noun
  • Fresh air, especially that breathed at the seaside and smelling of seaweed. 

  • An allotrope of oxygen (symbol O₃) having three atoms in the molecule instead of the usual two; it is a toxic gas, generated from oxygen by electrical discharge. 

  • Hypernym: greenhouse gas 

verb
  • To treat with ozone. 

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