Smokey Bear vs lemon squeezer

Smokey Bear

noun
  • A policeman, especially a highway patrol officer. 

  • A firefighter. 

  • A ranger or park service employee that deals with the public. 

  • A campaign hat. 

  • An aircraft used to drop defoliants in the Viet Nam war. 

name
  • A fictional bear dressed as a ranger who acts as a symbol of forest fire prevention, with the slogan "Only you can prevent forest fires." 

lemon squeezer

noun
  • A geezer; a man. 

  • A device used to extract juice from lemons by crushing the lemon using the sharp middle part. 

  • A kind of broad-brimmed hat with a symmetrically pinched crown resembling the top of a lemon squeezer (juicing device). 

How often have the words Smokey Bear and lemon squeezer occurred in a corpus of books? (source: Google Ngram Viewer )