| Answer | Crossword Clue |
|---|---|
| XENON | Gas in strobe lights |
| XENON | Gas used in strobe lights |
| XENON | Element in strobe lights |
| NEON | Gas in lights |
| NEON | Gas used in lights |
| NEON | Gas in advertising lights |
| NEON | Gas in commercial lights |
| NEON | Gas used in tubular lights. |
| NEON | Gas in some fluorescent lights |
| XENON | Inert gas used in lights |
| NEON | Gas in some very bright lights |
