subjection vs subjugation

subjection

noun
  • The state of being subjected. 

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

subjugation

noun
  • The state of being subjugated; forced control by others. 

  • The act of subjugating. 

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