calmness vs pressure

calmness

noun
  • The product of being calm. 

  • The state of being calm; tranquillity; silence. 

pressure

verb
  • To encourage or heavily exert force or influence. 

noun
  • A pressing; a force applied to a surface. 

  • Distress. 

  • The amount of force that is applied over a given area divided by the size of this area; force per unit area. 

  • A contrasting force or impulse of any kind 

  • Urgency 

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