faction vs political opposition

faction

noun
  • A group of people, especially within a political organization, which expresses a shared belief or opinion different from people who are not part of the group. 

  • Strife; discord. 

  • The facts found in fiction. 

  • A form of literature, film etc., that treats real people or events as if they were fiction; a mix of fact and fiction. 

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 faction and political opposition occurred in a corpus of books? (source: Google Ngram Viewer )