curvature vs derived function

curvature and derived function both are nouns.

Word	Noun	Adjective	Verb	Adverb
curvature	Yes	No	No	No
derived function	Yes	No	No	No

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

curvature: the rate of change (at a point) of the angle between a curve and a tangent to the curve
derived function: the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx

Other hypernyms of curvature include derivative, differential, differential coefficient, first derivative.

curvature (noun)	derived function (noun)
the rate of change (at a point) of the angle between a curve and a tangent to the curve	the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx
the property possessed by the curving of a line or surface
(medicine) a curving or bending; often abnormal