dynamo vs shooting star

dynamo

noun
  • The mechanism by which a celestial body, such as the Earth or a star, generates a magnetic field. 

  • An electricity generator; a dynamo-electric machine. 

  • An energetic person. 

shooting star

noun
  • A meteor, especially a streak of light in the night sky, caused by a meteoroid burning up as it enters the Earth’s atmosphere. 

  • Any of several wild flowering plants in the genus Dodecatheon, mostly found in Western North America. 

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