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.
karroo karoo carr carry kauri kaury kerry kerria kouroi quarry car gar kir kor
karroo arrow churro sorrow barrio barrow borrow broo burro burrow farrow furrow harrow karoo marrow morro morrow narrow charro yarrow