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.
gerahs gears gyrase jarrahs giros gyres gyros gyrus jeers jersey giaours jerries
hoorahs sirrahs surahs gerahs torahs horahs jarrahs hurrahs dourahs ras nairas mbiras buras rays auras boreas areas forays brass ferias frass gyrase serais grays prase murras sirras hurrays raws brays varas liras surras draws sharias choreas whereas urase trays toras tahrs hydras duras arrays bewrays varias craws koras terras arias eras crass pharaohs rias morays braes kerrias phrase boras moras burghs arras eyras paras cerias prays sierras maras rais rase norias derays morass praus braws muras erase frays horas soras drays proas hoorays harass grass lauras pariahs bras suras praos durras douras hydrase terais myrrhs cuirass trass yttrias ureas charas shariahs tiaras