flea bag vs grub

flea bag

noun
  • A poor and disreputable person. 

  • A sleeping bag. 

  • An unkempt mammal, especially a dog or cat. 

  • A disreputable place of accommodation. 

grub

noun
  • A despicable person; a lowlife. 

  • An insect at an immature stage of its life cycle. 

  • Food. 

  • A dirty person. 

verb
  • To scavenge or in some way scrounge, typically for food. 

  • To dig; to dig up by the roots; to root out by digging; often followed by up. 

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