dispensary vs pharmacopoeia

dispensary

noun
  • A retail establishment that sells marijuana and related supplies to customers with a prescription to use it for medical purposes. 

  • An institution that dispenses medical supplies and advice. 

pharmacopoeia

noun
  • A collection of drugs. 

  • An official book describing medicines or other pharmacological substances, especially their use, preparation, and regulation. 

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