Soviet vs Trotskyist

Soviet

noun

  • A citizen of the Union of Soviet Socialist Republics. 

adj

  • Supporting or representing the Soviet Union or Sovietism; Sovietist. 

  • Pertaining to the Soviet Union or its constituent republics. 

Trotskyist

noun

  • A supporter of Trotskyism. 

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