clodhopper vs woolly back

clodhopper

noun
  • A peasant or yokel. 

  • Any kind of shoe. 

  • A strong shoe for heavy-duty use, a boot. 

  • Wheatear; any of various passerine birds. 

  • A clumsy or foolish person. 

  • United States Navy ankle length work shoes, distinct from dress shoes or combat boots. 

woolly back

noun
  • Any unsophisticated person from the countryside. 

  • A New Zealander. 

  • A non-Liverpudlian person who travels to Liverpool, especially to work at the docks. 

  • A Welsh person. 

  • A person from the area surrounding Liverpool such as Skelmersdale, St. Helens, Southport, Wigan, Widnes, and the Wirral. 

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