background
bird
blue
bulb
cable
clear
cloud
communication
connection
current
danger
distribution
dove
electric
electrical
electricity
energy
equipment
hang
high
horizon
incandescent
industry
lamp
lamppost
lightbulb
line
metal
old
pigeon
pillar
pole
post
power
pylon
retro
rusty
sitting
sky
socket
supply
tall
technology
telephone
tower
voltage
wire
wires