department (n.)

• airspace
• ambit
• area
• arena
• bailiwick
• beat
• belt
• border
• borderland
• branch
• bureau
• circle
• circuit
• commissariat
• concern
• confines
• constabulary
• control
• corridor
• country
• demesne
• discipline
• district
• division
• domain
• dominion
• environs
• field
• ground
• heartland
• hemisphere
• hinterland
• jurisdiction
• land
• march
• milieu
• ministry
• municipality
• neighborhood
• office
• orb
• orbit
• pale
• part
• parts
• place
• precinct
• premises
• province
• quarter
• realm
• region
• responsibility
• round
• salient
• secretariat
• section
• segment
• soil
• space
• sphere
• subdivision
• terrain
• territory
• unit
• vicinity
• walk
• worry
• zone