decimation vs frankpledge

decimation

noun
  • A tithe or the act of tithing. 

  • A digital signal-processing technique for reducing the number of samples in a discrete-time signal; downsampling 

  • The creation of a new sequence comprising only every nth element of a source sequence. 

  • The killing or destruction of any large portion of a population. 

  • The killing or punishment of every tenth person, usually by lot. 

frankpledge

noun
  • The tithing itself. 

  • A decener: a member of a tithing bound in frankpledge. 

  • Any group so similarly answerable for the conduct of all its members and liable for collective punishment. 

  • A form of collective suretyship and punishment under English law among the members of a tithing. 

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