i Register
In some senses, illumination is marked as figuratively. Watch for register when choosing this word.
noun
The act of illuminating, or supplying with light; the state of being illuminated.
The room was filled with soft illumination from the candles.
Streetlights provide illumination at night.
Festive decoration of houses or buildings with lights.
Adornment of books and manuscripts with colored illustrations. See illuminate (transitive verb).
Splendour; brightness.
Enlightening influence; inspiration.
The philosopher’s work gave intellectual illumination to many.