gasoline vs liquefied petroleum gas

gasoline

noun
  • A flammable liquid consisting of a mixture of refined petroleum hydrocarbons, mainly used as a motor fuel; petrol. 

  • Any specific kind of gasoline. 

  • Marijuana, especially very potent or high quality. 

  • An alcoholic beverage made of vodka and energy drink. 

adj
  • Made from or using gasoline. 

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 gasoline and liquefied petroleum gas occurred in a corpus of books? (source: Google Ngram Viewer )