equipoise vs lose one's balance

equipoise

verb

  • To act or make to act as an equipoise. 

  • To cause to be or stay in equipoise. 

noun

  • A state of balance; equilibrium. 

  • A counterbalance. 

lose one's balance

verb

  • To become unsteady. 

How often have the words equipoise and lose one's balance occurred in a corpus of books? (source: Google Ngram Viewer )