abysm, abyss, ankle, arroyo, articulation, band, bed, bedding, belt, blaze, blaze a trail, blemish, blotch, bond, boundary, box canyon, brand, breach, break, butt, canyon, cavity, cervix, chalk, chalk up, chap, chasm, check, check off, chimney, chink, cicatrix, cicatrize, cleft, cleuch, clinch, closure, clough, col, connecting link, connecting rod, connection, couche, coulee, couloir, coupling, course, crack, cranny, crevasse, crevice, cut, cwm, dapple, dash, deck, defile, define, delimit, dell, demarcate, dike, discolor, ditch, donga, dot, dovetail, draw, elbow, embrace, engrave, excavation, fault, fissure, flaw, fleck, floor, flume, fracture, freckle, furrow, gallery, gap, gape, gash, gliding joint, gorge, groove, gulch, gulf, gully, hatch, hinge, hinged joint, hip, hole, impress, imprint, incision, interface, join, joining, joint, junction, juncture, kloof, knee, knuckle, layer, leak, ledge, level, line, link, lode, make a mark, mark, mark off, mark out, measures, miter, moat, mortise, mottle, neck, nick, notch, nullah, opening, overlayer, overstory, pass, passage, pencil, pepper, pivot, pivot joint, point, prick, print, punch, punctuate, puncture, rabbet, ravine, rent, riddle, ridge, rift, rime, rupture, scar, scarf, scarify, scissure, score, scotch, scratch, seal, shelf, shoulder, slit, slot, speck, speckle, split, splotch, spot, stage, stain, stamp, step, stigmatize, stitch, story, stratum, streak, striate, stripe, substratum, superstratum, suture, symphysis, tattoo, thickness, tick, tick off, tie rod, tier, toggle, toggle joint, topsoil, trace, trench, underlayer, underline, underscore, understory, understratum, union, valley, vein, void, wadi, weld, wrist, zone