subordination vs subservience

subordination

noun
  • The process of subordinating. 

  • The quality of being properly obedient to a superior (as a superior officer). 

  • The process of making something subordinate. 

  • The property of being subordinate; inferiority of rank or position. 

subservience

noun
  • The state of being subservient. 

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