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.
woolens woollens wholeness wooliness woolliness wellness wiliness
woolens lens oleins mulleins kaolins galleins colons gleans colins baleens cleans violins villeins xylenes solans flense aliens colleens glens poleyns lenis rellenos solons tolans liens lense lenos lenes silenus galenas leans galleons melenas mullens pleons pollens woollens