drugstore vs pharmacology

drugstore

noun
  • Synonym of pharmacy, especially a small standalone general store which includes a pharmacy. 

pharmacology

noun
  • The science of drugs including their origin, composition, pharmacokinetics, therapeutic use, and toxicology. 

  • The properties and reactions of drugs especially with relation to their therapeutic value. 

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