liquefied petroleum gas vs smother

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. 

smother

noun
  • Smoldering; slow combustion. 

  • Cookware used in such cooking. 

  • The act of smothering a kick (see verb section). 

verb
  • to burn very slowly for want of air; smolder. 

  • To suffocate; stifle; obstruct, more or less completely, the respiration of something or someone. 

  • To reduce to a low degree of vigor or activity; suppress or do away with; extinguish 

  • To cook in a close dish. 

  • To extinguish or deaden, as fire, by covering, overlaying, or otherwise excluding the air. 

  • To get in the way of a kick of the ball, preventing it going very far. When a player is kicking the ball, an opponent who is close enough will reach out with his hands and arms to get over the top of it, so the ball hits his hands after leaving the kicker's boot, dribbling away. 

  • To be suffocated. 

  • to perish, grow feeble, or decline, by suppression or concealment; be stifled; be suppressed or concealed. 

  • To get in the way of a kick of the ball. 

  • To breathe with great difficulty by reason of smoke, dust, close covering or wrapping, or the like. 

  • To prevent the development of an opponent's attack by one's arm positioning. 

  • To daub or smear. 

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