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

2 syllables:
ashworth, at birth, beckworth, bedworth, bloodsworth, bloodworth, breech birth, brickearth, brockworth, burnsworth, burnworth, chatsworth, childbirth, cross-birth, cudworth, cutbirth, dillworth, ducksworth, duckworth, dunsworth, dunworth, elsworth, flat-earth, fort worth, foxearth, foxworth, give birth, hackworth, handsworth, hayworth, heyworth, holdsworth, holmfirth, homebirth, houseworth, inearth, isleworth, kenworth, keyworth, live birth, 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:
active birth, after-birth, afterbirth, after earth, antibirth, bleaching earth, butterworth, counter-earth, down-to-earth, ellingsworth, express mirth, fuller's earth, given birth, giving birth, hackerearth, harmondsworth, hell on earth, hollandsworth, hollingsworth, hollingworth, hollinsworth, illingworth, kenilworth, killingsworth, killingworth, leavenworth, lower berth, lutterworth, middlesworth, place of birth, potter's earth, rudge-whitworth, saddleworth, sawbridgeworth, shuttlesworth, shuttleworth, super-earth, undermirth, upper berth, virgin birth, 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, vaginal birth

5 syllables:
alternative birth, 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