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.
gourd gourde guard gored curd grid cord grad greed court cured grade garda grout grody cored curdy gride gardai greedy grouty corody curred quired garred queered curried corrida queried corrody querida corrade corrode quarried card cred crud curt grat grit grot
gourd urd ford moored lord lured bored burd fiord gourde murid board fordo sciurid surd proud toured pored hoard horde word chord shored sored mured curd nurd orad court lurid guard loured cured curdy cord gored cored turd sord purda soured poured dured ordo whored wordy chored shroud
gor gaur goer gore gory guar guiro gurry guru kouroi agora agorae