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.
heroines heroins herons herns hairiness hoariness harness hernias harianas horns
heroines brinies ironies beeriness brines baronnes sciurines drones sorriness taurines neurines purines moraines terrines trienes merriness triunes leeriness urines cronies weariness groins chariness baroness chorines baronies airiness eeriness teariness irones furriness fieriness hairiness pyrones dourines serines tarriness murines neurones miriness trainees brionies marines trines groynes trones crones wariness goriness wiriness hoariness cheeriness heroins shrines
heroin heroine herein hereon hernia herniae heron