equipoise vs symmetry

equipoise

noun
  • A state of balance; equilibrium. 

  • A counterbalance. 

verb
  • To act or make to act as an equipoise. 

  • To cause to be or stay in equipoise. 

symmetry

noun
  • The satisfying arrangement of a balanced distribution of the elements of a whole. 

  • Exact correspondence on either side of a dividing line, plane, center or axis. 

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