illiberal vs not extreme

illiberal

adj
  • Narrow-minded; bigoted. 

  • Not adhering to either liberalism or neoliberalism. 

  • Restricting or failing to sufficiently promote individual choice and freedom. 

noun
  • One opposed to liberal principles. 

not extreme

How often have the words illiberal and not extreme occurred in a corpus of books? (source: Google Ngram Viewer )