faction vs tandem

faction

noun
  • Strife; discord. 

  • 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. 

  • 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. 

tandem

adj
  • Together; working as one. 

adv
  • One behind the other. 

noun
  • A method of language learning based on mutual exchange, where ideally each learner is a native speaker in the language the other person wants to learn. 

  • A group of two or more people, machines etc. working together; close collaboration. 

  • A bicycle or tricycle in which two people sit one behind the other, both able to pedal but only the person in front able to steer. 

  • A carriage pulled by two or more draught animals (generally draught horses) harnessed one behind the other, both providing the pulling power but only the animal in front able to steer. 

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