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.
hearsay hears hearse heresy hers harissa heirs heros heres hoers hares horsy hairs hoars haars harass hoarse heroes haeres horsey hoorays heiress hurrays harrows harries herries horas horse hires hours hirees horahs houris heroize hoorahs hurrahs hurries
hearsay resay daresay warsaw ars