lamppost vs scintillation

lamppost

noun
  • The pole that holds up a light so it can illuminate a wide area, such as holds up a streetlight. 

  • A tall, thin person. 

scintillation

noun
  • A flash of light; a spark. 

  • The twinkling of a star or other celestial body caused by turbulence in the Earth's atmosphere. 

  • The flash of light produced by something (especially a phosphor) when it absorbs ionizing radiation. 

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