Reticulum vs Sombrero

Reticulum

name
  • A small constellation of the southern summer sky, said to resemble a reticle. It lies between the constellations of Horologium and Dorado. 

  • Classified as two of 23 "Southern Asterisms" (近南極星區, Jìnnánjíxīngqū) 

Sombrero

name
  • An island in Anguilla. 

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