A light-year is the distance that light travels in one year.

The pilot light on the stove went out, so I had to relight it.

The idiot light on my car's dashboard started flashing, indicating a possible malfunction.

The city streets were illuminated by the vibrant glow of neon lights.

I prefer the warm glow of incandescent light bulbs.

I need to replace the fluorescent light in my office.

I need to replace the light fixture in my living room.

The new research sheds light on the causes of climate change.

The arc lamp illuminated the room with a bright light.