infirmary vs trauma centre

infirmary

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

  • A clinic or dispensary within another institution. 

trauma centre

noun
  • A type of hospital with a highly capable trauma department. 

  • A specialized section of a hospital intended to treat suddenly occurring life-threatening injuries and medical conditions. 

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