false friend vs faux ami

false friend

noun
  • A word in a language that bears a deceptive resemblance to a word in another language but in fact has a different meaning. 

  • Used other than figuratively or idiomatically: see false, friend. 

faux ami

noun
  • A false friend; one of a pair of words in different languages or dialects that look similar and may be related but that differ significantly in meaning. 

How often have the words false friend and faux ami occurred in a corpus of books? (source: Google Ngram Viewer )