dunghill vs junkyard

dunghill

noun
  • A heap of dung, especially one for agricultural purposes. 

  • Any wretchedly mean, dirty or loathsome place, situation or condition. 

junkyard

noun
  • A place where rubbish is placed. 

  • A business that sells used metal or items. 

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