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.
gourdes gourds guards grides grades grids curds corrades corodies grads courtesy corrodes cords courteous corrodies curets courts greeds crudes grates grouts greets greats curtesy garrets quartes curates garotes croutes curites grottoes queridas garrotes garottes cowrites curettes crowdies corridas creds cards grits garrottes cruds grots cartes carets crowds crates korats creeds cruets groats cairds curtsy gradus griots kurtas gratis quarts quirts carates cardias creates curtsey grottos karates
gourdes urds burets burds erodes grades murids guards parades curds prides rides brides joyrides corrodes sciurids irades derides heredes tardies hurdies trades haeredes burdies bredes weirdoes purdas hardies gourds rodes fordoes redes hayrides borides bourrides birdies grides nurds merdes perdues prudes bardes curets crudes sarodes corrades surds irides hydrides hordes tirades hurds turds weirdies charades