autonomous vs sovereign

autonomous

adj
  • Self-governing. Intelligent, sentient, self-aware, thinking, feeling, governing independently. 

  • Acting on one's own or independently; of a child, acting without being governed by parental or guardian rules. 

  • Used with no subject, indicating an unknown or unspecified agent; used in similar situations as the passive in English (the difference being that the theme in the English passive construction is the subject, while in the Celtic autonomous construction the theme is the object and there is no subject). 

sovereign

adj
  • Exercising power of rule. 

  • Predominant; greatest; utmost; paramount. 

  • Exceptional in quality. 

  • Princely; royal. 

  • Having supreme, ultimate power. 

noun
  • A large, garish ring; a sovereign ring. 

  • A very large champagne bottle with the capacity of about 25 liters, equivalent to 33+¹⁄₃ standard bottles. 

  • One who is not a subject to a ruler or nation. 

  • A monarch; the ruler of a country. 

  • A gold coin of the United Kingdom, with a nominal value of one pound sterling but in practice used as a bullion coin. 

  • A former Australian gold coin, minted from 1855–1931, of one pound value. 

  • Any butterfly of the tribe Nymphalini, or genus Basilarchia, as the ursula and the viceroy. 

verb
  • To rule over as a sovereign. 

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