ends of the earth vs wop-wops

ends of the earth

noun
  • Distant land. 

  • Extremities of the land. 

  • A very remote place. 

wop-wops

noun
  • An out of the way place; the boondocks or backcountry. 

How often have the words ends of the earth and wop-wops occurred in a corpus of books? (source: Google Ngram Viewer )