convexity vs projection

convexity and projection both are nouns.

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

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

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

convexity (noun)	projection (noun)
the property possessed by a convex shape	the act of expelling or projecting or ejecting
a shape that curves or bulges outward	the act of projecting out from something
	any structure that branches out from a central support
	the representation of a figure or solid on a plane as it would look from a particular direction
	a planned undertaking
	a prediction made by extrapolating from past observations
	the projection of an image from a film onto a screen
	the acoustic phenomenon that gives sound a penetrating quality
	(psychiatry) a defense mechanism by which your own traits and emotions are attributed to someone else
	any solid convex shape that juts out from something