jack up vs sweeten

jack up

verb
  • To ruin; wreck; mess up; screw up; sometimes as a bowdlerized substitution for fuck up. 

  • To raise, hoist, or lift a thing using a jack, or similar means. 

  • To raise, increase, or accelerate; often said of prices, fees, or rates. 

  • To organise something. 

  • To shoot, especially in the context of a poor shot opportunity. 

sweeten

verb
  • To make pure and salubrious by destroying noxious matter. 

  • To supplement (a composition) with additional instruments, especially strings. 

  • To make warm and fertile. 

  • To restore to purity; to free from taint. 

  • To become sweet. 

  • To make less painful or laborious; to relieve. 

  • To soften to the eye; to make delicate. 

  • To make sweet to the taste. 

  • To make more attractive; said of offers in negotiations. 

  • To make (more) pleasant or to the mind or feelings. 

  • To make mild or kind; to soften. 

How often have the words jack up and sweeten occurred in a corpus of books? (source: Google Ngram Viewer )