convexity vs thickening

convexity and thickening both are nouns.

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

As nouns, thickening is a hyponym of convexity; that is, thickening is a word with a more specific, narrower meaning than convexity:

Other hyponyms of convexity include umbo, camber, entasis, knob, node, ridge, peak, point, tip, taper, projection.

convexity (noun)	thickening (noun)
the property possessed by a convex shape	the act of thickening
a shape that curves or bulges outward	any thickened enlargement
	any material used to thicken

convexity (adjective)	thickening (adjective)
	becoming more intricate or complex
	accumulating and becoming more intense