adult

bright

bulb

choose

choosing

conservation

consumer

customer

economical

economy

efficiency

electric

electrical

electricity

electronics

energy

environment

environmental

equipment

glass

hand

hardware

holding

home

innovation

lamp

light

male

mall

man

market

modern

object

one

person

power

purchase

retail

row

save

shelf

shop

shopper

shopping

spiral

store

technology

tube

watt

white