I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
sords sards sorts surds sarods sardius sarodes sorites sorties sourdoughs sciurids seriates serrates sureties syrettes
fiords chords fords cords lords sords words rads herds lairds broads girds jerids borts forts hybrids burds byroads arrowwoods orts fards grads toroids chards boards hydrids jerrids cairds hoards hairdos farads weirdos yards shrouds shorts shards choroids nurds worts whorts surds roods curds urds sards triodes crowds prods rids creds rodes nards aroids periods gourdes pards viroids erodes sarodes grids hards hordes weirds morts liards merdes hurds rods cruds bards lards ports murids beards nerds reds guards irids sarods ordos corrodes droids bardes perdus gourds roads cards brads parodos sciurids broods purdas hydroids sorts torts turds wards birds chorioids shairds sherds shreds yairds yirds
sord sard soared sored sort sorta sortie sourdough soured surd