compulsory purchase vs peculation

compulsory purchase

noun
  • The power of a state to expropriate private land within its jurisdiction for public use. 

peculation

noun
  • The wrongful appropriation or embezzlement of shared or public property, usually by a person entrusted with the guardianship of that property. 

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