"Darkness" is a good one.
Diffusion.
sparkle, light, illuminate, glow, shine, glitter, glint, flash, blink
another word for galaxy is milky way
No, lunar is not another word for sun. Lunar means "relating to the Moon",or "of the Moon". Another word for our Sun is a "star".
There is no such thing as "conversation of light". However there is such a thing as "light conversation". "Light conversation" is another word for social smalltalk - discussion about the weather, garden, holidays etc; what people do when they meet up socially and want to appear friendly and move from person to person talking without starting any deep discussions.
non heavy. light.
incandescent lamp
Not heavy, soft
illuminate
Enlighten.
solar
dim
Refraction
Cyan.
Diffusion.
Tap
Luminus