razorback vs suckling pig

razorback

noun
  • A feral pig. 

  • The rorqual or finback whale. 

suckling pig

noun
  • An unweaned pig, especially one whose carcass is roasted whole on a spit. 

  • The flesh of such a pig cooked and served as a food item. 

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