dirtbag vs scumbug

dirtbag

noun
  • A dirty, grimy, sleazy, or disreputable person. 

  • A poor climber, alpinist, skier or other outdoorsman who lives cheaply, without normal employment, and with few amenities in order to spend as much time on their sport as possible. Used praisingly. 

scumbug

noun
  • A sleazy, disreputable or despicable person; lowlife. 

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