ambulance vs dispensary

ambulance

noun
  • A mobile field hospital. 

  • An emergency vehicle designed for transporting seriously ill or injured people to a hospital. 

verb
  • To transport by ambulance. 

dispensary

noun
  • An institution that dispenses medical supplies and advice. 

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

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