ambulance vs policlinic

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. 

policlinic

noun
  • An outpatient clinic, especially of a hospital. 

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