fuzzy-wuzzy vs undefined

fuzzy-wuzzy

adj
  • Fuzzy. 

noun
  • A Papuan, especially one who assisted the Australian military against the Japanese; a Fuzzy Wuzzy Angel. 

  • A Hadendoa warrior of the Mahdi army in the 19th century. 

undefined

adj
  • Lacking a definition or value. 

  • That does not have a meaning and is thus not assigned an interpretation. 

How often have the words fuzzy-wuzzy and undefined occurred in a corpus of books? (source: Google Ngram Viewer )