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.
piscinas paisanas paisans poisons puisnes paisanos piousness poisonous paesans paesanos puissance
piscinas leucines ricinus ricins oscines niacins mucins leucins cassinas cines ficins fascines acinus scions scenas cions hyoscines