airlock vs room

airlock

noun
  • A vestibule, foyer or entranceway with doors to the exterior on one end and doors to the interior on the other, functioning to keep indoor and outdoor air, humidity, and air temperatures separate. 

  • A sealed, airtight chamber, such as in a manned spacecraft or submarine, used to provide access to and from the sealed area without allowing air out or water in. 

room

noun
  • A separate part of a building, enclosed by walls, a floor and a ceiling. 

  • The people in a room. 

  • A space between the timbers of a ship's frame. 

  • Space for something, or to carry out an activity. 

  • Place or position in society; office; rank; post, sometimes when vacated by its former occupant. 

  • A quantity of furniture sufficient to furnish one room. 

  • Sufficient space for or to do something. 

  • A set of rooms inhabited by someone; one's lodgings. 

  • An area for working in a coal mine. 

  • A portion of a cave that is wider than a passage. 

  • An IRC or chat room. 

  • (One's) bedroom. 

adv
  • Off from the wind. 

verb
  • To assign to a room; to allocate a room to. 

  • To reside, especially as a boarder or tenant. 

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