convex shape vs ridge

convex shape and ridge both are nouns.

Word	Noun	Adjective	Verb	Adverb
convex shape	Yes	No	No	No
ridge	Yes	No	Yes	No

As nouns, ridge is a hyponym of convex shape; that is, ridge is a word with a more specific, narrower meaning than convex shape:

Other hyponyms of convex shape include umbo, camber, entasis, knob, node, thickening, peak, point, tip, taper, projection.

convex shape (noun)	ridge (noun)
a shape that curves or bulges outward	a beam laid along the edge where two sloping sides of a roof meet at the top; provides an attachment for the upper ends of rafters
	any long raised border or margin of a bone or tooth or membrane
	a long narrow natural elevation or striation
	a long narrow range of hills
	a long narrow natural elevation on the floor of the ocean
	any long raised strip

convex shape (verb)	ridge (verb)
	form into a ridge
	spade into alternate ridges and troughs
	throw soil toward (a crop row) from both sides
	plough alternate strips by throwing the furrow onto an unploughed strip
	extend in ridges