hogget vs razorback

hogget

noun
  • A young boar of the second year. 

  • The meat of a young sheep. 

  • A young colt or sheep of either gender from about 9 to 18 months of age (until it cuts 2 teeth). 

razorback

noun
  • A feral pig. 

  • The rorqual or finback whale. 

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