Meeting Room
An enclosed volume for scheduled group discussion; enclosure is the test, so an open meeting table sits in `open_office` and not here.
conference room
conference_room
materialgraph ms_room + materialsinuse PROGRAM_SPACE_TYPES
`conference_room` folds in here as an altLabel rather than standing as a sibling: it names the same enclosed room in a more formal register, chiefly American, and nothing about the specification changes with the word. Where the formality is real rather than lexical, the term wanted is `boardroom`.