ladder, echelons, notches, totem pole, pecking order, rankings, hierarchy, tiers, strata, castes, pedestal, pyramid, perches, elite, obscurity, pinnacle, top, quintile, standings, upward mobility, ascending, trapdoor, ledge, brackets, dregs, stratosphere, heap, earners, stepladder, upwardly mobile, glass ceiling, untouchables, breadline, bottom, percentile, realms, heirarchy, spots, level, table, fringes, purgatory, bootstraps, leapfrog, layers, groupings, cracks, leaderboard, vertebrae, floors, heights, abyss, pillars, participles, tippy, mediocrity, aristocracy, mire, banana peel, firmament, paygrade, misfits, rockface, meritocracies, ropes, dint, chart, bedrock, rikishi, ascension, pigeonholes, atop, incomes, eyries, upper crust, gerontocracy, pegs, peons, positions, places, backwaters, chasm, journeymen, netherworld, pantheon, flunkies, nobodies, middling, handhold, unfortunates, poverty, ivory tower, precipice, scrapheap, seniority, seeds, steerage, stairs, tenpins, stoop, bell curve, octaves, rung, bars, rails, rows, storeys, planks, spokes, slats, tines, warp, benches, bits, bracket, ladders, plank, stitches, strings

jack ladder, jacob's ladder, ladder, pilot ladder, stall bar