semi vs shooting box

semi

noun
  • A semi-detached house. 

  • A semifinal. 

  • A semi-trailer; a tractor-trailer; an eighteen-wheeler; an artic. 

  • A partial erection of the penis. 

shooting box

noun
  • A small house in the country for use in the shooting season. 

  • A box in which shooting or hunting equipment is stored. 

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