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.
jean jane jeon jenny jun jin gen john jinn gien gene join genu genie genii genoa genua jinni
bean jean quean lean mean paean pean dean wean yean an en