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.
lacunas lacunes lagunas lacunose lagunes lagans ligans logans lagoons leukons leakiness luckiness likens logons leggins
vicunas lacunas iguanas jacanas coquinas lacunes lagunas
lacuna lacunae lacune laguna lagune