fritz vs unsettle

fritz

verb
  • To go wrong or become defective. 

noun
  • A type of processed meat sausage; devon 

  • The state of being defective. 

unsettle

verb
  • To bring into disorder or disarray 

  • To make upset or uncomfortable 

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