1 syllable:
-born, -borne, bjoern, bjorn, boerne, born, borne, bourn, bourne, corn, corne, doorn, dorn, frorn, horne, korn, lorne, morn, mourn, mourne, orn, orne, porn, quorn, schorn, scorn, shorn, sporn, sworn, thorn, thorne, torn, torne, warn, warne, worn, yourn, zorn

2 syllables:
aborn, adorn, airborn, airborne, alcorn, allcorn, amborn, anorn, ashbourne, awarn, base-born, bemourn, bighorn, blackthorn, blood-borne, bloodborne, bluhdorn, broom-corn, broomcorn, buckhorn, buckthorn, bullhorn, careworn, chairborne, crowsworn, dead-born, dearborn, diswarn, earth-born, eekhoorn, eggcorn, einhorn, elkhorn, fairborn, feedhorn, findhorn, first-born, firstborn, fishbourne, foodborne, fool-born, forborne, foresworn, forewarn, foreworn, forlorn, forsworn, gisborne, glyndebourne, hartshorn, hawthorn, high-born, hirshhorn, inborn, itworn, jetborne, kilborne, lamborn, lasslorn, last-born, lastborn, layborne, longhorn, low-born, lowborn, mangcorn, mindhorn, mistborn, mongcorn, mungcorn, neushoorn, noforn, nordhorn, o'diorne, osborn, osborne, oudtshoorn, outscorn, outworn, pangborn, parforn, pibgorn, pile-worn, popcorn, preborn, prewarn, pronghorn, quickthorn, radborne, reborn, redhorn, runcorn, sanborn, schoellhorn, sea-born, seaborne, self-born, shard-borne, shoehorn, shopkorn, shopworn, sigh-born, skywarn, steinborn, still-born, still/born, stillborn, stockhorn, stormborn, straighthorn, suborn, terkhorn, tick-borne, time-worn, timeworn, tinhorn, toilworn, tomorn, tooth-borne, true-born, trueborn, twice-born, unborn, unshorn, unsworn, upborne, vandorn, vanhorn, vanhorne, waldhorn, wanhorn, war-worn, ward-corn, warworn, wave-worn, waveworn, wayworn, well-born, wellborn, wendehorn, whitehorn, whithorn, wind-borne, windborne, youporn

3 syllables:
amelcorn, apeldoorn, aragorn, avercorn, barley-corn, barleycorn, city-born, cyberporn, disadorn, dragonborn, foreign-born, girlsdoporn, gunicorn, hegadorn, heliborne, legendborn, mageborn, manglehorn, mclawhorn, metecorn, native-born, natural-born, oceanborn, otterbourne, paderborn, pepper-corn, peppercorn, pfefferkorn, plenicorn, polkinghorn, romanshorn, sirindhorn, taxicorn, unadorn, unicorn, water-borne, water-worn, waterborne, winterbourne

4 syllables:
allalinhorn, chulalongkorn, lamellicorn

5 syllables:
vajiralongkorn, virtualrealporn

1 syllable:
bern, stern, bairn, turn, erne, urn, cairn, yarn, fern, kern, barn, learn, berne, burn, earn, spurn, yearn, quern, churn, darn, byrne

2 syllables:
sauterne, return, discern, unworn, upturn, attorn, adjourn, unlearn, edirne, concern, casern, cowbarn, extern, interne, o'beirne, relearn, secern, wood-fern

3 syllables:
unconcern, self-concern