fume vs liquefied petroleum gas

fume

noun
  • A material that has been vaporized from the solid or liquid state to the gas state and re-coalesced to the solid state. 

  • Anything unsubstantial or airy; idle conceit; vain imagination. 

  • Rage or excitement which deprives the mind of self-control. 

  • The incense of praise; inordinate flattery. 

  • A gas or vapour/vapor that is strong-smelling or dangerous to inhale. 

verb
  • To apply or offer incense to. 

  • To expose (something) to fumes; specifically, to expose wood, etc., to ammonia in order to produce dark tints. 

  • To pass off in fumes or vapours. 

  • To be as in a mist; to be dulled and stupefied. 

  • To express or feel great anger. 

  • To emit fumes. 

liquefied petroleum gas

noun
  • A mixture of propane and butane with traces of some other gases, which is kept in a liquid state at high pressure in metal bottles, and used as a source of gas for cooking, heating and as a fuel in internal combustion engines in vehicles. 

How often have the words fume and liquefied petroleum gas occurred in a corpus of books? (source: Google Ngram Viewer )