quiet vs relaxation

quiet

noun
  • The absence of movement; stillness, tranquility. 

  • The absence of sound; quietness. 

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

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. 

verb
  • To become quiet or calm. 

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

intj
  • Be quiet. 

relaxation

noun
  • The act of relaxing or the state of being relaxed; the opposite of stress or tension; the aim of recreation and leisure activities. 

  • The transition of a nucleus, atom or molecule from a higher energy level to a lower one; the opposite of excitation 

  • The release following musical tension. 

  • A diminution of tone, tension, or firmness; specifically in pathology: a looseness; a diminution of the natural and healthy tone of parts. 

  • Remission of attention or application. 

  • Unbending; recreation; a state or occupation intended to give mental or bodily relief after effort. 

  • Remission or abatement of rigor. 

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