dictatorship vs suppression

dictatorship

noun
  • A type of government where absolute sovereignty is allotted to an individual or a small clique. 

  • Any household, institution, or other organization that is run under such sovereignty or autocracy. 

  • A government which exercises autocratic rule. 

suppression

noun
  • The act or instance of suppressing. 

  • A process in which a person consciously excludes anxiety-producing thoughts, feelings, or memories. 

  • The state of being suppressed. 

  • The entirety of acts aimed at stopping or preventing the enemy to execute such unwanted activities like firing, regrouping, observation or others. 

  • A subconscious adaptation by a person's brain to eliminate the symptoms of disorders of binocular vision such as strabismus, convergence insufficiency and aniseikonia. 

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