infirmary vs policlinic

infirmary

noun
  • A clinic or dispensary within another institution. 

  • A place where sick or injured people are cared for, especially a small hospital; sickhouse. 

policlinic

noun
  • An outpatient clinic, especially of a hospital. 

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