decime vs frankpledge

decime

noun
  • A 10-centime coin, minted up to 1999 and bearing the same value. 

  • A French coin minted from 1795 to 1801 and from 1814 to 1815, valued at one-tenth of a franc. 

frankpledge

noun
  • 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. 

  • The tithing itself. 

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

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