camber vs convexity

camber and convexity both are nouns.

Word	Noun	Adjective	Verb	Adverb
camber	Yes	No	Yes	No
convexity	Yes	No	No	No

As nouns, convexity is a hypernym of camber; that is, convexity is a word with a broader meaning than camber:

Other hypernyms of camber include convex shape.

camber (noun)	convexity (noun)
the alignment of the wheels of a motor vehicle closer together at the bottom than at the top	the property possessed by a convex shape
a slope in the turn of a road or track; the outside is higher than the inside in order to reduce the effects of centrifugal force	a shape that curves or bulges outward
a slight convexity (as of the surface of a road)

camber (verb)	convexity (verb)
curve upward in the middle