caveat vs swap out

caveat

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. 

noun
  • A formal objection. 

  • A notice requesting a postponement of a court proceeding. 

  • A qualification or exemption. 

  • A warning. 

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

swap out

verb
  • To exchange (something) for (something else). (usually followed by with or for) 

  • To transfer (memory contents) into a swap file. 

  • To exchange (something or someone) for an unused (or less-used) equivalent. 

noun
  • Anything that is swapped out for another; an exchange. 

  • A pre-prepared food item used in place of an unfinished food item in order to cut down the overall preparation time during filming. 

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