emancipation vs self-government

emancipation

noun
  • The act of setting free from the power of another, as from slavery, subjection, dependence, or controlling influence. 

  • The state of being thus set free; liberation (used, for example, of slaves from bondage, of a person from prejudices, of the mind from superstition, of a nation from tyranny or subjugation). 

self-government

noun
  • The governance of a region by its own populace; autonomy. 

How often have the words emancipation and self-government occurred in a corpus of books? (source: Google Ngram Viewer )