equipoise vs overbalance

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. 

overbalance

verb
  • To throw (someone or something) off balance; to cause to capsize. 

  • To lose one's balance; to fall over. 

  • To be more important than; to outweigh. 

  • To cause an imbalance in (something) by means of excess weight or numbers. 

noun
  • Excess of weight or value; something more than an equivalent. 

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