Use this domain for words referring to machines.
402 Industrial Machinery
403 Electrical Machines and Appliances
404 Household Machines and Appliances
405 Weighing, Measuring, and Recording Machines
406 Weight-moving Machinery
407 Agricultural Machinery
408 Computer Technology
What words refer to machines?
machine, mechanics, machinery, apparatus, engine, motor
What words refer to types of machines?
pump, generator, grinder, mill, computer,
What words refer to machines used in homes?
appliance, refrigerator, stove, oven
What words refer to when a machine is working?
be on, run, operate, work
What words refer to when a machine is not working?
be off, break down, broken
What words refer to starting a machine?
start, turn on, switch on, ignition
What words refer to stopping a machine?
stop, turn off, shut down