affirm vs dissent

affirm

verb
  • To agree, verify or concur; to answer positively. 

  • To make firm; to confirm, or ratify; especially (law) to assert or confirm, as a judgment, decree, or order, brought before an appellate court for review. 

  • To state under a solemn promise to tell the truth which is considered legally equivalent to an oath, especially of those who have religious or other moral objections to swearing oaths; also solemnly affirm. 

  • To assert positively; to tell with confidence; to aver; to maintain as true. 

  • To support or encourage. 

dissent

verb
  • To disagree; to withhold assent. Construed with from (or, formerly, to). 

  • To differ from, especially in opinion, beliefs, etc. 

noun
  • An act of disagreeing with, or deviating from, the views and opinions of those holding authority. 

  • Disagreement with the ideas, doctrines, decrees, etc. of a political party, government or religion. 

  • A violation that arises when disagreement with an official call is expressed in an inappropriate manner such as foul language, rude gestures, or failure to comply. 

  • A separate opinion filed in a case by judges who disagree with the outcome of the majority of the court in that case 

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