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.
villains villainies villainess villainous villeins violins valines violones vileness flans flanes valance felines valiance valiancy valonias fellness fullness violence fallowness felons flense
blains elains plains villains lins clines solanos clans colins glans jillions beelines cullions lions kaolins kalians plans planes salines billions oleins solions reloans aliens pillions solans yeelins hyalines ulans towlines tolanes delaines xylans salinas gleans silanes cleans relines alans galleins mulleins millions malines collins callans lawns felines elans bullions linos bylines alines bowlines hellions liens flans lines linns blinis valines loins loans villeins jawlines violins aloins leans mullions flanes moulins paulins kaolines lallans eloins lanes llanos talions millines tolans uhlans guylines cholines hyalins zillions yulans