consent vs disallow

consent

verb
  • To cause to sign a consent form. 

  • To express willingness, to give permission. 

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

noun
  • Voluntary agreement or permission. 

disallow

verb
  • To refuse to allow 

  • To reject as invalid, untrue, or improper 

  • to overrule a colonial legislation by the sovereign-in-privy council 

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