Constant, pine, pole, top, tin, cones, cone, poles, ole, sole, slop, slip, lip, lips, tan, tans, stint, tint, tent, pen, pin, lint, lent and a bunch more.

coop, loop, stoop, tot, notes, note, coat, pole, post, tin, piles, stint, pint, lint,lip, constant, cons, sole, slop, stop, can, tint, lets, let, son, pant, pants, pets, pet, set, sect, plea, pleas, tent, consent, sent, pinto, saint, paint, taint, late, slate, ton, tone, tones, too, lions, loins, cot, cots, loops, coops, tots, notes, coats, poles, pile, tents, lion, pints, lips, pin, pen, pens, pins, ants, ant, opal, opals, tip, tips, sip, test, nest, pest, pan, pans, pot, pots, spot, lots, lot, eat, eats, seat, pleat, coot, stone, tan, tans, cost, cops, cop, lop, lops, leaps, leap, step, is, it, an, tea, teas, in, on, one, ones, toot, soot, loot, toots, loots, coots, plan, plans, ops, tops, top, pone, pones, planes, plane, plain, plains, state, ate, tit, pit, lit, sit, nit, tic, tics, its, pits, nits, tits, sap, lap, tap, pat, taps, lapse, laps, pats, nose, toes, toe, to, tiles, tile, scone, stint, tints, plants, plant, planets, planet, plan, coal, coals, copes, cope, cap, caps, 165 words, I don't think I repeated any...

I remember this from an elementary school "challenge" in 1969 ... I got 137 in 15 minutes ... they are all in "Gina's" list ...

All 1697 of them. ace, aces, acinose, acne, acnes, aconite, aconites, act, actin, actinon, actinons, actins, action, actions, acts, ae, aeon, aeonic, aeons, ai, ail, ails, ain, aine, ains, ais, aisle, ait, aits, ale, alec, alecs, ales, alien, aliens, aline, alines, alist, alit, alnico, alnicoes, aloe, aloes, aloetic, aloin, aloins, alone, alp, alpine, alpines, alps, also, alt, alto, altos, alts, an, ancient, ancients, ancon, ancone, ancones, ane, anenst, anent, anes, ani, anil, anile, anils, anion, anions, anis, anise, anisole, anoint, anoints, anole, anoles, anon, ant, ante, antes, anti, antic, antics, antipole, antipoles, antis, antlion, antlions, ants, ape, apes, apices, aplite, aplites, apneic, apnoeic, apostil, apostle, apostolic, apse, apt, aptest, as, ascent, asci, ascot, aseptic, aslope, asp, aspect, aspen, aspic, at, ate, atelic, ates, atilt, atone, atones, atonic, atonics, atonies, atop, atopic, atopies, attic, attics, cain, cains, calotte, calottes, can, cane, canes, canine, canines, cannel, cannelon, cannelons, cannels, cannie, canniest, cannon, cannons, cannot, canoe, canoeist, canoes, canon, canonise, canonist, canons, canopies, cans, canso, canst, cant, cantle, cantles, canto, canton, cantons, cantos, cants, cap, cape, capelin, capelins, capes, capitol, capitols, caplin, caplins, capo, capon, capons, capos, capote, capotes, caps, capstone, caption, captions, case, casein, casino, cast, caste, castle, cat, cate, cates, cation, cations, catlin, catlins, catnip, catnips, cats, cattie, catties, cattle, ceil, ceils, celt, celts, cent, cental, centals, cento, centos, cents, cesta, cesti, cestoi, ciao, cine, cineast, cineol, cineols, cines, cion, cions, cist, cite, cites, citola, citolas, citole, citoles, clan, clans, clap, claps, clapt, clasp, claspt, clast, clean, cleans, cleat, cleats, clept, client, clients, cline, clines, clip, clips, clipt, clon, clone, clones, clons, cloot, cloots, clop, clops, close, closet, clot, clots, coal, coalpit, coalpits, coals, coapt, coapts, coast, coastline, coat, coati, coatis, coats, coil, coils, coin, coins, coital, col, cola, colas, cole, coles, colies, colin, colins, colon, colones, coloni, colonies, colonise, colonist, colons, cols, colt, colts, con, conation, conations, cone, conepatl, conepatls, cones, coni, conies, conin, conine, conines, conins, conn, connate, connote, connotes, conns, cons, consent, consol, console, consonant, constant, constipate, contain, contains, conte, content, contention, contentions, contents, contes, contest, continent, continental, continents, conto, contos, coo, cool, coolant, coolants, coolest, coolie, coolies, cools, coon, coons, coontie, coonties, coop, coops, coopt, coopts, coos, coot, cootie, cooties, coots, cop, copal, copals, cope, copen, copens, copes, copies, copilot, copilots, coplot, coplots, cops, copse, cos, coset, cosie, cosine, cost, costa, costae, costal, costate, cot, cotan, cotans, cote, cotenant, cotenants, cotes, cots, cotta, cottae, cottas, cotton, cottons, east, eat, eats, eclat, eclats, eclosion, ecotonal, ectopia, ectopias, el, elain, elains, elan, elans, elastic, elastin, elation, elations, eloin, eloins, els, en, enact, enacts, enatic, enation, enations, encina, encinal, encinas, enclasp, eniac, enlist, enol, enolic, enols, ens, entail, entails, entastic, entia, entoil, entoils, entopic, eolian, eon, eonian, eons, eosin, epact, epacts, epic, epical, epics, epinaos, epos, epsilon, es, escalop, escot, espanol, espial, estop, et, eta, etas, etna, etnas, ice, ices, icon, icones, icons, ilea, ileac, in, inane, inanes, inanest, inapt, incase, incept, incepts, incest, inclasp, inclose, inconstant, inept, inlace, inlaces, inlet, inlets, inn, innate, innocent, innocents, inns, ins, insane, insect, insectan, inset, insolate, insole, insolent, inspan, inspect, instal, instance, instant, instate, instep, intact, intent, intents, into, intonate, intonates, intone, intones, ion, ionone, ionones, ions, iota, iotas, is, isle, islet, isolate, isotone, isotope, istle, it, its, la, lac, lace, laces, laciest, lacs, lactone, lactones, lactose, laic, laics, lain, lance, lances, lancet, lancets, lane, lanes, lanose, lap, lapin, lapins, lapis, laps, lapse, las, lase, last, lat, late, laten, latens, latent, latents, latest, lati, latices, lats, latten, lattens, lattice, lattices, lattin, lattins, lea, lean, leans, leant, leap, leaps, leapt, leas, least, lection, lections, lei, leis, lenis, leno, lenos, lens, lent, lentic, lento, lentos, lepta, lepton, leptonic, leptons, lesion, lest, let, lets, li, liane, lianes, lice, lie, lien, liens, lies, lin, linac, linacs, line, linen, linens, lines, linn, linnet, linnets, linns, lino, linos, lins, lint, lints, lion, lions, lip, lipase, lips, lis, lisp, list, listen, lit, litas, litotes, lits, litten, lo, loan, loans, loca, locate, locates, location, locations, loci, loco, locoes, locos, loin, loins, lone, loo, looie, looies, loon, loonies, looniest, loons, loop, loopiest, loops, loos, loose, loosen, loot, loots, lop, lope, lopes, lops, lose, lost, lot, lota, lotas, lotic, lotion, lotions, lotos, lots, lotto, lottos, na, nae, nail, nails, nailset, nance, nances, nannie, nannies, naoi, naos, nap, nape, napes, napoleon, napoleons, naps, nascent, nasion, nastic, nates, nation, nations, neap, neaps, neat, neats, neist, nelson, neon, neons, nepotic, nepotist, nest, net, netop, netops, nets, nett, netts, nice, nicest, nicol, nicols, nictate, nictates, nil, nils, nine, nines, ninon, ninons, nip, nipa, nipas, nips, nit, niton, nitons, nits, no, nocent, noel, noels, noes, noetic, noil, noils, noise, nolo, nolos, nona, nonas, nonce, nonces, none, nonelastic, nones, nonslip, nonstop, nontitle, noo, noon, noons, noose, nopal, nopals, nope, nos, nose, nostoc, not, nota, notal, notate, notates, notation, notations, note, notes, notice, notices, notion, notional, notions, oast, oat, oaten, oats, oca, ocas, ocean, oceans, ocelot, ocelots, octal, octane, octanes, octant, octants, octet, octets, octopi, oe, oes, oil, oilcan, oilcans, oils, oilstone, ole, olea, oleic, olein, oleins, oleo, oleos, oles, olio, olios, on, onanist, once, onces, one, ones, onion, onions, ons, onset, ontic, onto, oolite, oolites, oops, oot, oots, op, opal, opaline, opalines, opals, ope, open, opens, opes, opiate, opiates, opine, opines, ops, opsin, opsonic, opsonin, opt, optic, optical, optics, option, optional, optionals, options, opts, os, oscine, oscitant, ose, osteal, ostia, ostinato, ostiole, otic, otiose, otto, ottos, pa, pac, pace, paces, pacs, pact, paction, pactions, pacts, paeon, paeons, pail, pails, pain, pains, paint, paints, paise, pal, pale, pales, palest, palet, paletot, paletots, palets, paliest, pals, pan, pane, panel, panelist, panels, panes, panic, panicle, panicles, panics, panne, pannes, pans, pant, pantie, panties, pantile, pantiles, pants, pas, pase, paseo, past, paste, pastel, pastil, pat, pate, paten, patens, patent, patents, pates, patient, patients, patin, patine, patines, patins, patio, patios, patois, pats, patten, pattens, pattie, patties, pe, pea, peal, peals, pean, peans, peas, peat, peats, pecan, pecans, pectin, pectins, pein, peins, pelican, pelicans, pelon, pelota, pelotas, pelt, peltast, pelts, pen, penal, pencil, pencils, penial, penis, penna, pennant, pennants, penni, pennia, pennis, pennon, pennons, pens, pensil, pension, pent, pentosan, peon, peons, pes, peso, pest, pet, petal, petals, petit, pets, petti, petto, pi, pia, pial, pian, piano, pianos, pians, pias, pic, pica, pical, picas, pice, picot, picots, pics, pie, pies, pieta, pietas, pile, pilea, piles, pilose, pilot, pilots, pin, pina, pinas, pine, pineal, pines, pineta, pinna, pinnace, pinnaces, pinnacle, pinnacles, pinnae, pinnal, pinnas, pinnate, pinocle, pinocles, pinole, pinoles, pinon, pinones, pinons, pins, pint, pinta, pintano, pintanos, pintas, pintle, pintles, pinto, pintoes, pintos, pints, piolet, piolets, pion, pions, pis, pistol, pistole, piston, pit, pita, pitas, piton, pitons, pits, pittance, pittances, place, places, placet, placets, plaice, plaices, plain, plainest, plains, plaint, plaints, plait, plaits, plan, plane, planes, planet, planets, plans, plant, plants, plastic, plat, plate, platen, platens, plates, platies, platiest, platonic, platoon, platoons, plats, plea, pleas, pleat, pleats, plena, plenist, pliant, plica, plicae, plicate, plie, plies, plosion, plot, plots, plotties, poco, pocosin, poet, poetic, poetical, poetics, poets, poi, point, pointe, pointes, points, pois, poise, poison, pol, pole, polecat, polecats, poleis, polenta, polentas, poles, police, polices, polio, polios, polis, polite, politest, polo, poloist, polos, pols, ponce, ponces, pone, ponent, pones, ponies, pons, pontes, pontil, pontils, pontine, ponton, pontons, pool, pools, poon, poons, pose, posit, post, postal, postin, pot, potation, potations, potato, potatoes, potent, potential, potentials, potion, potions, pots, potsie, potstone, potties, pottle, pottles, potto, pottos, psi, psoae, psoai, ptisan, ptotic, sac, sae, saice, sail, sain, saint, sal, sale, salep, salic, salient, saline, salon, saloon, saloop, salp, salt, saltie, saltine, sanction, sane, sanicle, sannop, santol, santonin, sap, sapient, saponin, saponine, saponite, sat, sate, sati, satin, satinet, scale, scaleni, scalp, scan, scant, scape, scat, scatt, scena, scent, scion, scone, scoop, scoot, scop, scope, scot, scotia, scotopia, scottie, sea, seal, seat, sec, secant, sect, section, sectional, sei, sel, sen, senna, sennit, senopia, sent, senti, sepal, sepia, sepic, sept, septa, septal, septic, septical, set, seta, setal, seton, si, sial, sic, sice, sienna, silane, silent, silo, silt, sin, since, sine, sip, sipe, sit, site, sitten, slain, slant, slap, slat, slate, slept, slice, slip, slipe, slipt, slit, sloe, sloop, slop, slope, slot, snail, snap, sneap, snip, snipe, snit, snool, snoop, snoot, snot, so, soap, social, societal, socle, soil, sol, sola, solace, solan, solanin, solanine, solano, solate, solation, sole, soli, solion, solo, solon, son, sonance, sonant, sonantic, sonatine, sone, sonic, sonicate, sonnet, soon, soot, sop, sopite, sot, sotol, spa, space, spae, spail, spait, spale, span, spancel, spaniel, spat, spate, spean, special, speil, spelt, spent, spic, spica, spicae, spicate, spice, spiel, spile, spilt, spin, spinal, spinate, spine, spinel, spinet, spit, spital, spite, spittle, spittoon, splat, splenia, splenic, splent, splice, spline, splint, split, spoil, spoilt, spoliate, spool, spoon, spot, stacte, stain, stale, stance, stane, stannic, stannite, staple, state, static, statice, station, steal, stein, stela, stelai, stelic, stencil, steno, stenotic, step, stet, stile, stilt, stint, stipe, stipel, stoa, stoae, stoai, stoat, stoic, stoical, stole, stolen, stolon, stolonic, stone, stool, stoolie, stoop, stop, stope, stopt, ta, tace, taces, tacet, tacit, taco, taconite, taconites, tacos, tact, tactile, taction, tactions, tacts, tae, tael, taels, tail, tails, tain, tains, taint, taints, talc, talcose, talcs, tale, talent, talents, tales, tali, talion, talions, talipes, talipot, talipots, talon, talons, tan, tanist, tannest, tannic, tannin, tannins, tans, tanto, tao, taos, tap, tape, tapes, tapis, taps, tas, taste, tat, tate, tates, tats, tea, teal, teals, teapot, teapots, teas, teaspoon, teat, teats, tecta, tectal, tela, telia, telic, teloi, telos, telson, telsonic, ten, tenail, tenails, tenant, tenants, tenia, tenias, tennis, tennist, tenon, tenons, tenpin, tenpins, tens, tension, tent, tents, teopan, teopans, tepa, tepas, tesla, test, testa, teston, testoon, tetanic, tetanics, ti, tic, tical, ticals, tics, tie, tieclasp, ties, til, tile, tiles, tils, tilt, tilts, tin, tincal, tincals, tinct, tincts, tine, tinea, tineal, tineas, tines, tinplate, tinplates, tins, tinsel, tinstone, tint, tints, tip, tipcat, tipcats, tips, tiptoe, tiptoes, tis, tisane, tit, titan, titans, title, titles, tits, to, toast, tocsin, toe, toecap, toecaps, toenail, toenails, toes, toil, toile, toiles, toilet, toilets, toils, toit, toits, tola, tolan, tolane, tolanes, tolans, tolas, tole, toles, ton, tonal, tone, tones, tonetic, tonetics, tonic, tonics, toniest, tonlet, tonlets, tonne, tonnes, tons, tonsil, tontine, tontines, too, tool, tools, toon, toons, toot, tootle, tootles, toots, tootsie, top, topcoat, topcoats, tope, topes, topi, topic, topical, topics, topis, topoi, topos, tops, topsail, topsoil, topstone, tost, tot, total, totalise, totals, tote, totes, tots.

s, clapt, clasp, claspt, clast, clean, cleans, cleat, cleats, clept, client, clients, cline, clines, clip, clips, clipt, clon, clone, clones, clons, cloot, cloots, clop, clops, close, closet, clot, clots, coal, coalpit, coalpits, coals, coapt, coapts, coast, coastline, coat, coati, coatis, coats, coil, coils, coin, coins, coital, col, cola, colas, cole, coles, colies, colin, colins, colon, colones, coloni, colonies, colonise, colonist, colons, cols, colt, colts, con, conation, conations, cone, conepatl, conepatls, cones, coni, conies, conin, conine, conines, conins, conn, connate, connote, connotes, conns, cons, consent, consol, console, consonant, constant, constipate, contain, contains, conte, content, contention, contentions, contents, contes, contest, continent, continental, continents, conto, contos, coo, cool, coolant, coolants, coolest,

Istanbul ;)

Well, what we like to give here at AB, "points."