anxiolytic vs chlordiazepoxide

anxiolytic

noun
  • A drug prescribed for the treatment of symptoms of anxiety. 

adj
  • That reduces anxiety; tranquilizing 

chlordiazepoxide

noun
  • A benzodiazepine derivative used as a sedative drug; trade name Librium among others. 

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