graininess vs raggedness

graininess and raggedness both are nouns.

Word	Noun	Adjective	Verb	Adverb
graininess	Yes	No	No	No
raggedness	Yes	No	No	No

As nouns, raggedness is a hypernym of graininess; that is, raggedness is a word with a broader meaning than graininess:

graininess: the quality of being composed of relatively large particles
raggedness: a texture of a surface or edge that is not smooth but is irregular and uneven

Other hypernyms of graininess include roughness.

graininess (noun)	raggedness (noun)
the quality of being composed of relatively large particles	shabbiness by virtue of being in rags
	a texture of a surface or edge that is not smooth but is irregular and uneven