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.
rennase wrens rinse reins renews rouens ruanas rins runs runes rains ranis ruins roans ranees rawness ruinous wryness
rennase kinase duennas zinnias sunnahs vinasse hennas cannas goannas guanase annas mannose mannas nanas nonas pinnace pinnas sennas siennas sunnas donnas unease