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.
jouncy jounce jaunce johns joins jones joannes johnnies
bouncy jouncy wincey unci dunce zincy pounce ounce mincy nancy lunacy launce jounce jaunce fancy bounce chancy
jun jeon john johnnie johnny join