Names of maps

How did they choose the names of maps? I will make a list if you have any ideas post em!

Ambush - Could have been an ambush spot
Backlot -
Bloc -
Bog - It may have been a bog before it dried up
Broadcast - It is a broadcasting bulding
Chinatown - It is a Chinatown, obviously
Countdown - There is a countdown before the missiles go off
Crash - A downed chopper in the middle
Creek - there is a dried up creek in the middle
District - A Middle east district
Downpour - It is raining
Killhouse -
Overgrown - Plants have overgrown all of everything
Pipeline - A place where, possibly, oil is transferred through pipes
Shipment - It has shipping crates
Showdown -
Vacant - No one is there
Wetwork - It is wet most of the time on a boat