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.
woollens woolens woolliness wholeness wooliness wellness wiliness
pollens mullens woollens lens rellenos aliens gallons galleins collins cleans villeins flense silenus bouillons billons ballons baleens glens woolens leans callans pleons lense lenes xylenes mulleins colleens galenas galleons gleans melenas lallans liens oleins poleyns lenos lenis