federalism vs sectarianism

federalism

noun
  • A system of national government in which power is divided between a central authority and a number of regions with delimited self-governing authority. 

  • Covenantalism. 

  • The belief that such a system is superior to other forms of government. 

sectarianism

noun
  • Rigid adherence to a particular sect, denomination, ideology, or party. 

  • A political system in which power is shared among religious sects based on a constitutional formula distributing public offices among these sects 

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