federalism vs sovereignty

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. 

sovereignty

noun
  • Of a polity: the state of making laws and controlling resources without the coercion of other nations. 

  • An independent or sovereign territory. 

  • Of a ruler: supreme authority over all things. 

  • Of a person: the liberty to decide one's thoughts and actions. 

  • Excellence, mastery, preeminent efficacy. 

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