adult
auto
automobile
automotive
cable
car
construction
danger
dangerous
dirty
electric
employment
engine
fuel
garage
grease
hand
hands
hold
industrial
industry
internal
job
labor
lift
maintenance
mechanic
mechanical
men
motor
nut
oil
parts
people
person
profession
repair
safety
service
shop
station
tool
trade
transmission
under
vehicle
wind
wire
work
worker