balance vs fluctuation

balance

noun
  • Mental equilibrium; mental health; calmness, a state of remaining clear-headed and unperturbed. 

  • A pair of scales. 

  • The remainder. 

  • A state in which opposing forces harmonise; equilibrium. 

  • A list accounting for the debits on one side, and for the credits on the other. 

  • Something of equal weight used to provide equilibrium; counterweight. 

  • Awareness of both viewpoints or matters; neutrality; rationality; objectivity. 

  • A device used to regulate the speed of a watch, clock etc. 

  • The result of such a procedure; the difference between credit and debit of an account. 

  • The overall result of conflicting forces, opinions etc.; the influence which ultimately "weighs" more than others. 

  • Apparent harmony in art (between differing colours, sounds, etc.). 

verb
  • To move toward, and then back from, reciprocally. 

  • To bring (items) to an equipoise, as the scales of a balance by adjusting the weights. 

  • To hold (an object or objects) precariously; to support on a narrow base, so as to keep from falling. 

  • To compare in relative force, importance, value, etc.; to estimate. 

  • To make the credits and debits of (an account) correspond. 

  • To make (concepts) agree. 

  • To have matching credits and debits. 

  • To contract, as a sail, into a narrower compass. 

  • To be in equilibrium. 

fluctuation

noun
  • A wavering; unsteadiness. 

  • In medicine, a wave-like motion or undulation of a fluid in a natural or abnormal cavity (e.g. pus in an abscess), which is felt during palpation or percussion. 

  • A motion like that of waves; a moving in this and that direction. 

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