calm vs spasm

calm

verb
  • To become calm. 

  • To make calm. 

adj
  • with few or no waves on the surface; not rippled. 

  • Peaceful, quiet, especially free from anger and anxiety. 

  • Free of noise and disturbance. 

  • Without wind or storm. 

noun
  • The state of being calm; peacefulness; absence of worry, anger, fear or other strong negative emotion. 

  • A period of time without wind. 

  • The state of being calm; absence of noise and disturbance. 

spasm

verb
  • To produce and undergo a spasm or series of spasms. 

noun
  • A sudden, involuntary contraction of a muscle, a group of muscles, or a hollow organ. 

  • A sudden and temporary burst of energy, activity, or emotion. 

  • A violent, excruciating seizure of pain. 

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