frankpledge vs obliteration

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. 

obliteration

noun
  • The cancellation, erasure or deletion of something. 

  • The cancellation of the function, structure, or both of a vessel or organ; for example, the occlusion of the lumen of a duct, blood vessel, or lymphatic vessel, be it solely functional (as when squeezed by nearby mass effect or inflammation) or both structural and functional (as when clogged with thrombus, embolus, or fibrosis). 

  • The total destruction of something. 

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