Bolshevik vs insurgent

Bolshevik

noun
  • A Russian communist revolutionary, member of the Bolshevik Party in the 1917 Communist Revolution of Russia. 

  • A member of the Communist Party that ruled the Russian Soviet Federative Socialist Republic and the Union of Soviet Socialist Republics. 

insurgent

noun
  • One of several people who take up arms against the local state authority; a participant in insurgency. 

adj
  • Rebellious, opposing authority. 

  • Of water: surging or rushing in. 

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