convexness vs contour

convexness and contour both are nouns.

Word	Noun	Adjective	Verb	Adverb
convexness	Yes	No	No	No
contour	Yes	No	Yes	No

As nouns, contour is a hypernym of convexness; that is, contour is a word with a broader meaning than convexness:

Other hypernyms of convexness include configuration, conformation, form, shape.

convexness (noun)	contour (noun)
the property possessed by a convex shape	any spatial attributes (especially as defined by outline)
	a feature (or the order or arrangement of features) of anything having a complex structure
	a line drawn on a map connecting points of equal height

convexness (verb)	contour (verb)
	form the contours of