downthrow vs subjugation

downthrow

noun
  • Ruin; defeat. 

  • A depression of the strata on one side of a fault 

subjugation

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

  • The act of subjugating. 

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