fritz vs let slide

fritz

verb
  • To go wrong or become defective. 

noun
  • A type of processed meat sausage; devon 

  • The state of being defective. 

let slide

verb
  • To allow the condition of something to deteriorate due to negligence or apathy. 

  • Used other than figuratively or idiomatically: see let, slide. 

  • To let go, allow, release, pass over without action. 

  • To tolerate a violation of a norm from. 

  • To pass out of one's thought as not being of any consequence. 

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