fuzzy-wuzzy vs iffy

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. 

iffy

adj
  • Uncertain or chancy. 

  • Of dubious authenticity, legitimacy or legality. 

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