bodger vs bonehead

bodger

noun
  • One who works in a rough and ready, slipshod manner. 

  • A woodworker in the traditional style characterised by the use of hand tools, a pole lathe and use of green timber. 

bonehead

noun
  • Someone who is stubborn, thick-skulled, or stupid. 

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