dark vs twilight

dark and twilight both are nouns.

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

dark (noun)	twilight (noun)
an unenlightened state	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 unilluminated area	a condition of decline following successes
absence of light or illumination	the time of day immediately following sunset
absence of moral or spiritual values
the time after sunset and before sunrise while it is dark outside

dark (adjective)	twilight (adjective)
devoid of or deficient in light or brightness; shadowed or black	lighted by or as if by twilight
(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