background
bar
brown
cable
chair
communication
contact
currency
danger
dangerous
death
dirty
electric
electrical
electricity
energy
entrance
equipment
european
garage
goal
heavy
high
home
industry
inside
lichtschalter
light
mechanic
off
old
outlet
plastic
plug
power
press
safety
spot
strong
supply
switch
system
technique
technology
text
up
vintage
white
wood