vampire vs vulture

vampire

noun
  • A person who drains one's time, energy, money, etc. 

  • A medical technician who works with patients' blood. 

  • A person with the medical condition systemic lupus erythematosus, colloquially known as vampirism, with effects such as photosensitivity and brownish-red stained teeth. 

  • Synonym of anti-ship missile (ASM), particularly an incoming hostile one. 

  • A blood-sucking bat; vampire bat (Desmodus rotundus) 

  • A mythological undead creature said to feed on the blood of the living. 

verb
  • To drain of energy or resources. 

vulture

noun
  • A person who profits from the suffering of others. 

  • Any of several carrion-eating birds of the families Accipitridae and Cathartidae. 

verb
  • To circle around one's target as if one were a vulture. 

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