caveat vs free pass

caveat

noun
  • A qualification or exemption. 

  • A formal objection. 

  • A notice requesting a postponement of a court proceeding. 

  • A warning. 

  • A formal notice of interest in land under a Torrens land-title system. 

verb
  • To formally object to something. 

  • To qualify a statement with a caveat or proviso. 

  • To lodge a formal notice of interest in land under a Torrens land-title system. 

free pass

noun
  • An exemption from normal processes. 

  • An intentional walk. 

  • A document entitling the bearer to free transportation. 

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