lightness vs dark

lightness and dark both are nouns.

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

lightness (noun)	dark (noun)
the trait of being lighthearted and frivolous	an unenlightened state
the visual effect of illumination on objects or scenes as created in pictures	an unilluminated area
the property of being comparatively small in weight	absence of light or illumination
having a light color	absence of moral or spiritual values
the gracefulness of a person or animal that is quick and nimble	the time after sunset and before sunrise while it is dark outside
a feeling of joy and pride

lightness (adjective)	dark (adjective)
	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