putty knife vs xyster

putty knife

noun
  • A hand tool with a flexible blade used by glaziers to apply putty to seal window panes to the frame and mullions. 

  • A similar tool with a wide, flat blade used by painters, plasterers, and carpenters to spread putty to fill holes and cracks. 

xyster

noun
  • A surgical instrument used to scrape bones. 

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