twilight vs dark

twilight and dark both are nouns.

Word	Noun	Adjective	Verb	Adverb
twilight	Yes	Yes	No	No
dark	Yes	Yes	No	No

twilight (noun)	dark (noun)
the diffused light from the sky when the sun is below the horizon but its rays are refracted by the atmosphere of the earth	an unenlightened state
a condition of decline following successes	an unilluminated area
the time of day immediately following sunset	absence of light or illumination
	absence of moral or spiritual values
	the time after sunset and before sunrise while it is dark outside

twilight (adjective)	dark (adjective)
lighted by or as if by twilight	devoid of or deficient in light or brightness; shadowed or black
	(used of color) having a dark hue
	brunet (used of hair or skin or eyes)
	secret
	causing dejection
	stemming from evil characteristics or forces; wicked or dishonorable
	showing a brooding ill humor
	not giving performances; closed
	marked by difficulty of style or expression
	lacking enlightenment or knowledge or culture