curliness vs curvature

curliness and curvature both are nouns.

Word	Noun	Adjective	Verb	Adverb
curliness	Yes	No	No	No
curvature	Yes	No	No	No

As nouns, curvature is a hypernym of curliness; that is, curvature is a word with a broader meaning than curliness:

Other hypernyms of curliness include curve.

curliness (noun)	curvature (noun)
(of hair) a tendency to curl	the rate of change (at a point) of the angle between a curve and a tangent to the curve
	the property possessed by the curving of a line or surface
	(medicine) a curving or bending; often abnormal