bower vs machine room

bower

noun
  • A bedroom or private apartments, especially for a woman in a medieval castle. 

  • A type of ship's anchor, carried at the bow. 

  • A shady, leafy shelter or recess in a garden or woods. 

  • A peasant; a farmer. 

  • One who bows or bends. 

  • A large structure made of grass, twigs, etc., and decorated with bright objects, used by male bower birds during courtship displays. 

  • A muscle that bends a limb, especially the arm. 

  • One who plays any of several bow instruments, such as the musical bow or diddley bow. 

  • Either of the two highest trumps in euchre. 

  • A dwelling; a picturesque country cottage, especially one that is used as a retreat. 

verb
  • To embower; to enclose. 

machine room

noun
  • A limited-access room in a larger building dedicated to HVAC equipment and other machinery. 

  • A dedicated room for computers and related data processing equipment, often having a raised floor, abundant and dedicated air conditioning, and specialized power supply and fire suppression systems. 

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