bloodsucking vs parasitic

bloodsucking

adj
  • parasitic, leechlike or freeloading 

  • That draws off the blood of another animal, or a person. 

parasitic

adj
  • Of or pertaining to a biological or symbolic parasite. 

  • Drawing upon another organism for sustenance. 

  • Exploiting another for personal gain. 

  • Of emotional damages: accompanying a physical or pecuniary injury. 

noun
  • A component of a circuit that does not show up in a circuit's schematic but does show up in the circuit's behavior. 

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