art
bright
buy
concept
creative
design
drawing
efficient
electrical
electricity
energy
energysaving
equipment
flat
fluorescent
glass
glow
graphic
halogen
icon
idea
illuminated
illumination
illustration
imagination
innovation
inspiration
invention
isolated
lamp
light
lighting
lowenergy
luminosity
object
power
shine
shop
sign
sodium
solution
symbol
technology
trade
watt