dun vs petition

dun

noun
  • An urgent request or demand of payment. 

  • A collector of debts, especially one who is insistent and demanding. 

  • A fly made to resemble the mayfly subimago. 

  • A newly hatched, immature mayfly; a mayfly subimago. 

  • An ancient or medieval fortification; especially a hill-fort in Scotland or Ireland. 

  • A mound or small hill. 

  • A brownish grey colour. 

  • A structure in the Orkney or Shetland islands or in Scotland consisting of a roundhouse surrounded by a circular wall; a broch. 

intj
  • Imitating a deep bass note, such as that found in suspenseful music. 

adj
  • Of a brownish grey colour. 

verb
  • To harass by continually repeating e.g. a request. 

  • To ask or beset a debtor for payment. 

petition

noun
  • A formal written request for judicial action. 

  • A compilation of signatures built in order to exert moral authority in support of a specific cause. 

  • A prayer; a supplication; an entreaty. 

  • A formal, written request made to an official person or organized body, often containing many signatures. 

verb
  • To make a request to, commonly in written form. 

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