dun vs plague

dun

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

  • To ask or beset a debtor for payment. 

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

adj
  • Of a brownish grey colour. 

noun
  • 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. 

  • An urgent request or demand of payment. 

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

plague

verb
  • To harass, pester or annoy someone persistently or incessantly. 

  • To afflict with a disease or other calamity. 

noun
  • A group of common grackles. 

  • A widespread affliction, calamity or destructive influx, especially when seen as divine retribution. 

  • The bubonic plague, the pestilent disease caused by the virulent bacterium Yersinia pestis. 

  • An epidemic or pandemic caused by any pestilence, but specifically by the above disease. 

  • A grave nuisance, whatever greatly irritates. 

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