distrainment vs expropriation

distrainment

noun
  • The act of distraining; distraint. 

expropriation

noun
  • The act of expropriating; the surrender of a claim to private property; the act of depriving of private propriety rights. 

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