abysm, abyss, alienation, aperture, arroyo, bifurcated, bisected, blaze, box canyon, branched, branching, breach, breach of friendship, break, breakage, broaching, burst, canyon, cavity, chap, chasm, check, chimney, chink, chinky, chip, clearing, cleavage, cleuch, clough, clove, cloven, col, coulee, couloir, crack, cracked, cranny, crena, crevasse, crevice, cut, cwm, defile, dehiscent, dell, depression, dichotomous, dike, dimidiate, disaffection, disclosure, disfavor, disruption, disunion, disunity, ditch, divergence, divided, dividedness, division, donga, draw, estrangement, excavation, falling-out, fault, fenestra, fissure, fissured, fissury, fistula, flaw, flume, fontanel, foramen, forked, forking, fracture, furrow, gap, gape, gaping, gappy, gash, gat, gorge, groove, gulch, gulf, gully, hack, halved, hiatus, hole, hollow, in pieces, in shreds, incision, indentation, inlet, interval, jag, jog, joggle, joint, kerf, kloof, lacerate, lacerated, lacuna, laying open, leak, mangled, moat, mutilated, nick, nock, notch, nullah, open rupture, opening, opening up, orifice, outlet, pass, passage, passageway, pore, quartered, ragged, ramified, ravine, recall of ambassadors, rent, rift, rime, rimose, rimulose, rip, riven, rupture, scale, schism, scissure, score, scotch, seam, separation, severed, shredded, slash, slice, slit, slot, space, splinter, splintered, split, stoma, tattered, tear, throwing open, torn, trench, uncorking, unstopping, valley, void, wadi, yawn
bisection, bipartition, dichotomy, subdichotomy, halving, dimidiation, bifurcation, forking, branching, ramification, divarication, fork, prong, fold, half, moiety, bisected, cloven, cleft
, bipartite, biconjugate, bicuspid, bifid, bifurcous, bifurcate, bifurcated, distichous, dichotomous, furcular, semi-, demi-, hemi.
interval, interspace, separation, break, gap, opening, hole, chasm, hiatus, caesura, interruption, interregnum, interstice, lacuna, cleft
, mesh, crevice, chink, rime, creek, cranny, crack, chap, slit, fissure, scissure, rift, flaw, breach, rent, gash, cut, leak, dike, ha-ha, gorge, defile, ravine, canon, crevasse, abyss, abysm, gulf, inlet, frith, strait, gully, pass, furrow, abra, barranca, barranco, clove, gulch, notch, yawning gulf, hiatus maxime, hiatus valde deflendus, parenthesis, void, incompleteness, period, interim (time), with an interval, far between, breachy, rimose, rimulose, at intervals, longo intervallo.