soothe vs tone up

soothe

verb
  • To allay; assuage; mitigate; soften. 

  • To smooth over; render less obnoxious. 

  • To restore to ease, comfort, or tranquility; relieve; calm; quiet; refresh. 

  • To calm or placate someone or some situation. 

  • To keep in good humour; wheedle; cajole; flatter. 

  • To ease or relieve pain or suffering. 

  • To temporise by assent, concession, flattery, or cajolery. 

  • To bring comfort or relief. 

tone up

verb
  • To cause to give a higher tone or sound; to give a higher tone to; to make more intense; to heighten; to strengthen. 

  • To firm and strengthen the muscles of the body by regular exercise. 

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