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.
luna lune luny lanai lauan liana lin lino lown loon loin liny line lain leno lion loan lawn lone lane lien lean linn lawny leone liane liney llano loony
buna fauna kuna luna puna sauna tuna na un