pharmacopoeia vs pharmacy

pharmacopoeia

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

  • A collection of drugs. 

pharmacy

noun
  • The science of medicinal substances, inclusive of pharmaceutics, pharmaceutical chemistry, pharmacology, phytochemistry, and forensics. 

  • The role or occupation of a pharmacist. 

  • A place where prescription drugs are sold or dispensed. 

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