quiet vs work up

quiet

verb
  • To become quiet or calm. 

  • To cause (someone or something) to become quiet. 

adj
  • Not busy, of low quantity. 

  • Not talking much or not talking loudly; reserved. 

  • With little or no sound; free of disturbing noise. 

  • Not showy; undemonstrative. 

  • Requiring little or no interaction. 

  • Having little motion or activity; calm. 

noun
  • The absence of sound; quietness. 

  • The absence of movement; stillness, tranquility. 

  • The absence of disturbance or trouble; peace, security. 

intj
  • Be quiet. 

work up

verb
  • To raise; to excite; to stir up. 

  • To give (a patient) a general medical examination to assess health and fitness. 

  • To develop. 

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