accede vs disapprove

accede

verb
  • To agree or assent to a proposal or a view; to give way. 

  • To become a party to an agreement or a treaty. 

  • To come to an office, state or dignity; to attain, assume (a position). 

disapprove

verb
  • To condemn; to consider wrong or inappropriate; used with of. 

  • To have or express an unfavorable opinion. 

  • She disapproves of rap music because of its sometimes aggressive lyrics. 

  • To refuse to approve; reject. 

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