Related by context. Frequent words. (Click for all words.) 72 light bulbs 64 bulb 56 bulbs 56 CFLs 55 incandescent bulbs 53 lamp 51 LED lights 51 water heater 51 lights 50 incandescent 50 stove 49 lamps 47 candle 47 faucet 44 watt 44 toaster 44 smoke detector 43 LEDs 42 stoves 42 thermostat 41 water heaters 41 sprinkler 41 electrical appliances 41 microwave oven 41 LED lighting 41 lantern 41 smoke alarm 40 air conditioner 40 lighting 40 fluorescent 40 electricity 40 chandelier 40 furnace 40 dishwasher 40 transformer 40 washing machine 40 heater 40 alarm clock 39 electrical 39 thermostats 39 electrical outlet 39 wood stove 39 Lighting 39 flashlight 39 lighting fixtures 38 microwaves 38 heaters 38 cigarette lighter 38 candles 38 batteries 38 toothbrush 38 smoke detectors 38 LED 38 watts 38 solar panels 37 cooker 37 volt 37 windmill 37 lithium batteries 37 streetlights 37 ovens 37 sockets 37 torches 37 flicker 37 refrigerator 37 circuit breaker 37 extension cord 37 unplug 37 kilowatt 37 faucets 37 wattage 36 flickering 36 oven 36 battery powered 36 Earth Hour 36 magnifying glass 36 socket 36 lanterns 36 fuse 36 furnaces 36 charger 35 headlight 35 VCR 35 inverter 35 Lamp 35 kilowatt hour 35 illumination 35 kWh 35 light 35 vacuum cleaner 35 smoke alarms 35 chimney 35 clocks 35 spark plug 35 glow 35 propane tank 34 AA batteries 34 flashlights 34 dryer 34 gizmo 34 volts