shooting star vs shootingstar

shooting star

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

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

shootingstar

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