1 syllable:
-born, -borne, bjoern, bjorn, boerne, born, borne, bourn, bourne, corn, corne, doorn, dorn, frorn, horn, 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, bass horn, bemourn, be born, bighorn, blackthorn, blood-borne, bloodborne, bluhdorn, broom-corn, broomcorn, buckhorn, buckthorn, bullhorn, careworn, car horn, chairborne, christ thorn, crowsworn, crow corn, dead-born, dearborn, dent corn, diswarn, earth-born, eekhoorn, eggcorn, einhorn, elkhorn, fairborn, feedhorn, field corn, findhorn, first-born, firstborn, fishbourne, flint corn, foodborne, fool-born, forborne, foresworn, forewarn, foreworn, forlorn, forsworn, french horn, gisborne, glyndebourne, green corn, hartshorn, hawthorn, hedge thorn, 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, post horn, preborn, prewarn, pronghorn, quickthorn, radborne, reborn, redhorn, runcorn, sanborn, schoellhorn, sea-born, seaborne, seed corn, self-born, shard-borne, shoehorn, shopkorn, shopworn, sigh-born, skywarn, soft corn, steinborn, still-born, still/born, stillborn, stockhorn, stormborn, straighthorn, suborn, sweet corn, terkhorn, tick-borne, time-worn, timeworn, tinhorn, toilworn, tomorn, tooth-borne, true-born, trueborn, twice-born, unborn, 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, basset horn, bella thorne, candy corn, city-born, cyberporn, disadorn, dragonborn, english horn, false buckthorn, fire thorn, flour corn, foreign-born, girlsdoporn, guinea corn, gunicorn, hegadorn, heliborne, legendborn, little horn, mageborn, manglehorn, mclawhorn, metecorn, motor horn, native-born, natural-born, oceanborn, otterbourne, paderborn, pear hawthorn, pepper-corn, peppercorn, pfefferkorn, plenicorn, polkinghorn, powder horn, romanshorn, sirindhorn, spindle horn, squirrel corn, sugar corn, taxicorn, trevor horn, unadorn, unicorn, water-borne, water-worn, waterborne, winterbourne, yankee corn

4 syllables:
alder buckthorn, allalinhorn, baritone horn, chulalongkorn, edible corn, egyptian corn, english hawthorn, evergreen thorn, indian corn, jeanne tripplehorn, jesus is born, lamellicorn, little bighorn, rhea seehorn, southern buckthorn, texas longhorn

5 syllables:
automobile horn, golden age of porn, jerusalem thorn, vajiralongkorn, virtualrealporn

6 syllables:
california buckthorn, carolina buckthorn, johnny english reborn, rocky mountain bighorn

7 syllables:
battle of little bighorn

8 syllables:
battle of the little bighorn, naked as the day one was born, naked as the day you were born

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

2 syllables:
sauterne, return, in turn, discern, seed fern, unworn, sword fern, beech fern, upturn, attorn, good turn, adjourn, unlearn, sweet fern, edirne, spun yarn, stem turn, rope yarn, kick turn, tree fern, concern, male fern

3 syllables:
royal fern, tax return, joint return, climbing fern, about turn, unconcern, walking fern, christmas fern, day return, boston fern

4 syllables:
cinnamon fern, carriage return

5 syllables:
chili con carne, point of no return, amended return, asparagus fern