dissident vs political opposition

dissident

noun
  • A person who formally opposes the current political structure, the political group in power, the policies of the political group in power, or current laws. 

  • One who disagrees or dissents; one who separates from the established religion. 

  • Sometimes Dissident: in the kingdom of Poland, the name for Christians not part of the Roman Catholic Church. 

adj
  • In a manner that disagrees; dissenting; discordant. 

political opposition

noun
  • Actions by one political group against another political group, either by using governmental power or by popular actions such as protests; generally, disagreement in politics. 

  • A recognized political party or group of parties in multiparty political systems that is present in Parliament or some other legislative body and does not control the floor (usually due to being in the minority). 

  • An unrecognized political party in a one-party state. 

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