abstract
architecture
artistic
background
bright
brilliance
brilliant
building
bulb
ceiling
conservation
decoration
design
detail
ecology
economy
efficient
electric
electrical
energy
equipment
fluorescent
geometric
glass
hall
house
illuminate
illumination
indoor
industrial
interior
lamp
light
lines
luminary
luminescence
luminous
luxury
metal
modern
pattern
power
roof
room
save
saver
savings
watts