bumpiness vs raggedness

bumpiness and raggedness both are nouns.

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

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

bumpiness: the texture of a surface that has many bumps
raggedness: a texture of a surface or edge that is not smooth but is irregular and uneven

Other hypernyms of bumpiness include roughness.

bumpiness (noun)	raggedness (noun)
the texture of a surface that has many bumps	shabbiness by virtue of being in rags
	a texture of a surface or edge that is not smooth but is irregular and uneven