types:

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umbo

a slight rounded elevation where the malleus attaches to the eardrum

camber

a slight convexity (as of the surface of a road)

entasis

a slight convexity in the shaft of a column; compensates for the illusion of concavity that viewers experience when the sides are perfectly straight

knob, node, thickening

any thickened enlargement

ridge

any long raised strip

peak, point, tip

a V shape

taper

a convex shape that narrows toward a point

projection

any solid convex shape that juts out from something

widow's peak

a V-shaped point in the hairline in the middle of the forehead

raphe, rhaphe

a ridge that forms a seam between two parts

cusp

small elevation on the grinding surface of a tooth

salient

(military) the part of the line of battle that projects closest to the enemy

jag

a sharp projection on an edge or surface

bulge, bump, excrescence, extrusion, gibbosity, gibbousness, hump, jut, prominence, protrusion, protuberance, swelling

something that bulges out or is protuberant or projects from its surroundings

corrugation

a ridge on a corrugated surface

acantha, spine, spur

any sharply pointed projection

tail, tail end

any projection that resembles the tail of an animal

knife, tongue

any long thin projection that is transient

keel

a projection or ridge that suggests a keel

head

the tip of an abscess (where the pus accumulates)

type of:

solid

a three-dimensional shape