infirmary vs sickbay

infirmary

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

  • A clinic or dispensary within another institution. 

sickbay

noun
  • A room or area for the treatment of the sick or injured in a school. 

  • A place used as a hospital on board a ship, on a spaceship (in science fiction). 

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