sick bay vs sickbay

sick bay

noun
  • A room in an institution, or compartment on a vessel, where basic medical supplies are kept and medical attention can be sought. 

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 sick bay and sickbay occurred in a corpus of books? (source: Google Ngram Viewer )