Trotskyist vs neo-Marxist

Trotskyist

noun

  • A supporter of Trotskyism. 

neo-Marxist

noun

  • A supporter of neo-Marxism. 

adj

  • Of or pertaining to neo-Marxism. 

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