Fiat vs write-off

Fiat

noun
  • An automobile manufactured by the Italian firm Fiat S.p.A.. 

write-off

noun
  • Something that is now worthless (such as a car after an accident) 

  • The cancellation of an item; the amount cancelled or lost 

How often have the words Fiat and write-off occurred in a corpus of books? (source: Google Ngram Viewer )