lightness vs gracefulness

lightness and gracefulness both are nouns.

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

As nouns, gracefulness is a hypernym of lightness; that is, gracefulness is a word with a broader meaning than lightness:

lightness (noun)	gracefulness (noun)
the trait of being lighthearted and frivolous	beautiful carriage
the visual effect of illumination on objects or scenes as created in pictures
the property of being comparatively small in weight
having a light color
the gracefulness of a person or animal that is quick and nimble
a feeling of joy and pride