cannibal vs ignoramus

cannibal

noun
  • An organism which eats others of its own species or kind, especially a human who eats human flesh. 

ignoramus

verb
  • To make such a ruling against (an indictment). 

noun
  • A totally ignorant person—unknowledgeable, uneducated, or uninformed; a fool. 

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