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.
guarded carded grided curded graded garoted gridded garotted garroted garreted garrotted grated carted corded curated grouted courted greeted crudded gradate gritted quirted crowded quartet corraded curetted corroded grottoed cardioid graduate quartette crated credit carotid cordate cordite crawdad created curtate gordita
bearded hoarded farded warded carded yarded barded larded boarded guarded chorded tarted corraded farted herded forded radded reded bradded braided derided traded grided breaded curded eroded warted worded horded treaded graded paraded birded parted lorded marauded birdied readded marted carted corded raided girded prided darted dreaded hearted weirded charted corroded readied
guard garda gardai gourd gourde