enfranchisement vs subjection

enfranchisement

noun
  • The investiture with any of several municipal privileges 

  • the conversion of a copyhold estate into a freehold estate 

  • The act of enfranchising 

  • A release from slavery 

subjection

noun
  • The state of being subjected. 

  • The act of bringing something under the control of something else. 

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