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.
curds cards cords creds cruds curets curtsy courts gourds guards creeds cairds credos crudes crowds curates curtesy gourdes cardias curtsey curites crowdies corodies queridas corrodes courtesy curettes corridas corrades carts grids crits grads courteous corrodies crates greeds kurtas cruets grades carats grides carets cartes quarts quirts carates caritas carrots creates croutes quartes quartos cowrites
burds curds gourds urds hurds turds surds nurds nerds crudes weirds reds lairds rudds murids wards perdus marauds birds rids lords jerids bardes brads frauds grads grids yirds yairds shreds shards chords jerrids words weirdos hydrids gourdes courts sciurids sards prudes rods cords chards hurts fards fiords rads hybrids cairds hairdos guards cruds irids pards hordes herds hards creds nards merdes farads hoards sords ordos bards fords liards prods purdas sarods beards lards cards druids boards girds shairds sherds shrouds yards yurts
curd curdy curt curred curette card cardia cardiae cardio cord court credo cred crud cruddy crude curate cured curet curite curried scurried