assent vs disown

assent

verb
  • To agree to a proposal. 

noun
  • agreement; act of agreeing 

disown

verb
  • To refuse to own, or to refuse to acknowledge one’s own. 

  • To repudiate any connection to; to renounce. 

  • To detach (a job or process) so that it can continue to run even when the user who launched it ends his/her login session. 

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