article
bright
business
clean
commodity
diagonally
eco
ecology
economy
electric
electrical
electronic
emergency
emit
energy
environment
equipment
flashlight
fresh
glow
goods
green
ground
household
illuminant
lamp
led
life
light
lighting
luminescence
milieu
miscellaneous
moss
natural
nature
necessities
notion
object
plant
power
saving
source
still
sundries