consent vs contend

consent

verb
  • To agree in opinion or sentiment; to be of the same mind; to accord; to concur. 

  • To express willingness, to give permission. 

  • To cause to sign a consent form. 

noun
  • Voluntary agreement or permission. 

contend

verb
  • To be in debate; to engage in discussion; to dispute; to argue. 

  • To be in opposition; to contest; to dispute; to vie; to quarrel; to fight. 

  • To believe (something is reasonable) and argue (for it); to advocate. 

  • To struggle or exert oneself to obtain or retain possession of, or to defend. 

  • contend with: To try to cope with a difficulty or problem. 

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