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.
ruana ran run rain rani roan ruin rune rainy ranee rouen runny rin rein wren
ruana ana anna canna faunae fauna faena buna lauan anoa luna goanna sunna unai choana hyaena mania guan guano kana kuna quean lanai liana mana manna puna guanay nana sauna tuna unau choanae yuan