equilibrate vs overbalance

equilibrate

verb
  • To balance, to be in a state of equilibrium. 

  • To balance, or bring into equilibrium. 

overbalance

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

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. 

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