Synonyms and related words :
bilge, blain, bleb, blister, blob, boss, bow, bubble, bulb, bulge, bulla, bump, bunch, burl, button, cahot, chine, clump, convex, dowel, ear, flange, flap, gall, gnarl, handle, hill, hump, hunch, jog, joggle, knob, knot, knur, knurl, lip, loop, lump, mole, mountain, nevus, nub, nubbin, nubble, papilloma, peg, rib, ridge, ring, shoulder, spine, stud, style, tab, tubercle, tubercule, verruca, vesicle, wale, wart, welt