1 syllable:
berth, birthe, cirth, dearth, derth, dirth, earth, firth, fuerth, furth, gerth, girth, hirth, kerth, kurth, mirth, mirthe, murth, perth, tirth, werth, wirth, worth, wurth, yearth

2 syllables:
ashworth, beckworth, bedworth, bloodsworth, bloodworth, brickearth, brockworth, burnsworth, burnworth, chatsworth, childbirth, cross-birth, cudworth, cutbirth, dillworth, ducksworth, duckworth, dunsworth, dunworth, elsworth, flat-earth, fort worth, foxearth, foxworth, hackworth, handsworth, hayworth, heyworth, holdsworth, holmfirth, homebirth, houseworth, inearth, isleworth, kenworth, keyworth, longsworth, longworth, molesworth, networth, outworth, petworth, pickworth, pro-birth, rare earth, rebirth, rushworth, self-worth, sick berth, simearth, skipworth, stallworth, stillbirth, tadworth, tamworth, tidworth, titsworth, transperth, unearth, unworth, wandsworth, wedgeworth, wentworth, whitworth, wirksworth, woodworth, woolworth

3 syllables:
after-birth, afterbirth, after earth, antibirth, bleaching earth, butterworth, counter-earth, down-to-earth, ellingsworth, express mirth, fuller's earth, hackerearth, harmondsworth, hell on earth, hollandsworth, hollingsworth, hollingworth, hollinsworth, illingworth, kenilworth, killingsworth, killingworth, leavenworth, lower berth, lutterworth, middlesworth, potter's earth, rudge-whitworth, saddleworth, sawbridgeworth, shuttlesworth, shuttleworth, super-earth, undermirth, upper berth, wigglesworth

4 syllables:
alkaline earth, crisis on earth-x, gall-of-the-earth, gall of the earth, man-of-the-earth, nap-of-the-earth, star-of-the-earth, tammy duckworth

5 syllables:
atmosphere of earth, gravity of earth, history of earth, natural childbirth

6 syllables:
celebritynetworth, read method of childbirth, spiritual rebirth, the pillars of the earth, woolsthorpe-by-colsterworth

7 syllables:
bradley method of childbirth

8 syllables:
list of royalty by net worth

1 syllable:
north, hearth, garth, fourth, forth, njorth

2 syllables:
call forth, bring forth, henceforth, thenceforth, set forth, burst forth, come forth, due north, give forth, go forth, pour forth, stretch forth

3 syllables:
back and forth, and so forth, west by north, east by north, blossom forth, body forth, burgeon forth, compass north, in the north, issue forth, sally forth, to the north

4 syllables:
magnetic north, northeast by north, northwest by north, move back and forth

5 syllables:
travel back and forth