4 letters:
aoun, boon, coon, dune, goon, heun, hewn, hoon, joon, june, koon, kuhn, loon, moon, noon, poon, rune, soon, suen, toon, tune, yoon

5 letters:
-zoon, aboon, antun, astun, barun, boone, broon, broun, bruen, brune, bruun, buhne, c-301, choon, clune, coone, croon, dioon, doone, doune, gruen, grune, harun, imune, karun, katun, keune, khuen, koone, korun, kroon, kuehn, liqun, mhoon, mohun, moone, noone, ogoun, parun, perun, pl-01, prune, reune, roone, scoon, shewn, shoen, shoon, soune, spoon, ss501, swoon, tarun, thune, toone, torun, troon, undun, varun, xm301

6 letters:
ajloun, ak-101, antoon, artoon, as-201, aswoon, attune, aucune, baboon, badoon, baloon, banoun, barzun, batoon, beaune, bedoon, cacoon, cahoon, cancun, ceroon, co-une, cocoon, cohoon, cohune, comune, coroun, cva-01, dahoon, dunoon, empugn, eozoon, gaboon, gewoon, gipoun, haroon, haroun, heroon, ilkoon, immune, impoon, impugn, impune, intune, jejune, judoon, kanoon, karoun, khatun, kokoon, kuehne, kytoon, lacune, lagoon, lagune, lamune, latoun, macoun, magoon, majoun, maroon, maroun, mccuen, mccune, mckune, meroon, mifune, olokun, oppugn, or-201, pantun, petune, racoon, ramoon, ramune, ratoon, rd-701, repugn, rowoon, saloon, samoon, schoon, seroon, simoon, strewn, tycoon, tyfoon, unhewn, vcm-01, vodoun, zf2001

7 letters:
am-2201, apolune, babboon, balloon, barloon, bassoon, basyoun, batroun, bethune, bradoon, bridoon, buffoon, calhoon, calhoun, cantoon, cardoon, cartoon, coccoon, commune, corroon, dekroon, disjune, eftsoon, epizoon, exomoon, falcoon, festoon, floroon, gadroon, galloon, godroon, gossoon, hachiun, hamdoon, harpoon, harroun, hsu-001, huntoon, jargoon, ki-moon, kowloon, laffoon, lampoon, laocoon, lardoon, lms-901, madjoun, majnoon, marroon, mattoon, matzoon, mcaloon, mcclune, methuen, mithoon, monsoon, mpu-401, muldoon, mxmtoon, ohakune, patroon, persoon, platoon, pontoon, powtoon, premune, puccoon, raccoon, rancune, rangoon, rattoon, reprune, rockoon, sashoon, sassoon, sh2-101, shamoon, shimbun, siogoon, spitoon, sts-101, t-spoon, tampoon, tappoon, terhune, testoon, testu01, tetroon, tsukune, tsurune, tuffoon, tuyuhun, typhoon, ur-100n, verboon, vfa-101, vla2001, walloon, webtoon, wyntoon, xiaoyun, yeppoon, zagtoon, zeitoun, zis-101

8 letters:
01011001, 11001001, antidune, autotune, babymoon, bestrewn, bigaroon, bookboon, bosthoon, cameroon, cameroun, crampoon, cytozoon, demilune, doubloon, ducatoon, ducommun, duntroon, ectozoon, entozoon, epiploon, facetune, finetune, foredune, forenoon, fullmoon, gambroon, gombroon, iso 8601, kunekune, laayoune, lahmacun, macaroon, masamune, menehune, metazoon, mid-june, new moon, octaroon, opportun, oversoon, pashtoon, patacoon, perilune, picaroon, picayune, poltroon, polyzoon, quelquun, rapamune, raunsoun, rigadoon, safemoon, semilune, semisoun, shagroon, shalloon, spadroon, spittoon, splatoon, spontoon, teaspoon, telefoon, teletoon, tenoroon, timimoun, too soon, vaz-2101, viramune, viromune, year0001, zoey 101

9 letters:
actimmune, ambermoon, atakebune, auto-tune, barracoon, blue moon, brigadoon, chemiloon, ciclatoun, deltarune, demi-lune, disharoon, espantoon, excommune, fine-tune, frigatoon, full moon, go2damoon, grinspoon, half-moon, hand-hewn, high noon, honeymoon, hydrozoon, kana-boon, kantokuen, lovespoon, medimmune, microzoon, musketoon, nyctibune, opportune, pantaloon, phytozoon, pickaroon, pirate101, plenilune, protozoon, pulpatoon, quintroon, roughhewn, ryan dunn, sand dune, saskatoon, scotstoun, seldshewn, soupspoon, spacetoon, sporozoon, stabyhoun, sung hoon, supermoon, type-moon, wizard101

10 letters:
actinozoon, blatteroon, burnistoun, cytauxzoon, dennistoun, familymoon, hematozoon, i.i.m.u.n., inopportun, ju ji-hoon, keith moon, kim go-eun, malacatune, malacotoon, melicotoon, melocotoon, oil tycoon, ptychozoon, quarteroon, redballoon, rough-hewn, sailormoon, scandaroon, sekhukhune, soup spoon, spermatoon, tablespoon, taipei 101, tuxedomoon, urbanspoon, vinegaroon, yesternoon

11 letters:
antimonsoon, carrie coon, chefchaouen, chekelatoun, cicada 3301, dermatozoon, dishkiyaoon, gordonstoun, granfalloon, haematozoon, heart-spoon, inopportune, karbassioun, lee je-hoon, megan boone, muttahidoon, mvc-cov1901, mystery 101, reimportune, schmigadoon, st3000dm001, steven yeun, sugar spoon, twelve noon, utsuro-bune, vinegarroon, vingt-et-un, witherspoon, wotherspoon

12 letters:
al-munafiqun, black lagoon, daniel boone, dessertspoon, greasy spoon, harvest moon, huevocartoon, intercommune, kite balloon, midafternoon, septemtrioun, silver spoon, spermatozoon, tapas-bh-201, weatherspoon

13 letters:
al-muhajiroun, choi tae-joon, contrabassoon, dessert spoon, eperythrozoon, leucocytozoon, park seo-joon, pilot balloon, sleep-at-noon, trial balloon

14 letters:
common raccoon, double bassoon, sawdust saloon, signature tune

15 letters:
barrage balloon, billiard saloon, dominique dunne, encephalitozoon, john c. calhoun, sausage balloon, trinitrotoluene

16 letters:
animated cartoon, children of dune, full-of-the-moon

17 letters:
phase of the moon

19 letters:
capital of cameroon, eurofighter typhoon, god emperor of dune

20 letters:
frank herbert's dune

21 letters:
new phase of the moon, strong girl bong-soon

22 letters:
full phase of the moon, meteorological balloon

25 letters:
the dark side of the moon