leechcraft vs poison

leechcraft

noun
  • The art or practice of healing or medicine. 

  • The skill or expertise of a physician, medical knowledge; medical attendance. 

poison

noun
  • Something that harms a person or thing. 

  • A substance that is harmful or lethal to a living organism when ingested. 

  • Any substance that inhibits catalytic activity. 

  • An intoxicating drink; a liquor. (note: this sense is chiefly encountered in the phrases "name your poison" and "what's your poison ?") 

verb
  • To place false information into (a cache) as part of an exploit. 

  • To cause (someone) to hate or to have unfair negative opinions. 

  • To use poison to kill or paralyse (somebody). 

  • To pollute; to cause to become poisonous. 

  • To cause to become much worse. 

  • To inhibit the catalytic activity of. 

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