"Darkness" is a good one.
sparkle, light, illuminate, glow, shine, glitter, glint, flash, blink
The Hawaiian word for light is "mālamalama."
Another name for the light microscope is the optical microscope.
Another word for galaxy is "star system" or "stellar system."
How about " contraction" ? Or you could have hemoglobin reactional dispersal of sperm
Another word for "light" as in not heavy is "lightweight."
The runaway reactor at Chernobyl went subcritical by prompt dispersal.
dispersal, scattering
I think you meant dispersal, not disperal.Early methods for seed dispersal were not very effective.
incandescent lamp
dim
Not heavy, soft
illuminate
Enlighten.
solar
Cyan.