dumpsite vs scrapheap

dumpsite

noun
  • A dump for garbage, usually a dump that is actively in use; or the location of such a dump 

scrapheap

noun
  • A pile in which junk is discarded. 

  • A junkyard. 

  • A collection of discarded or rejected items or ideas. 

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