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.
shariahs sharias shris shares charas shears sherris sherries chars chairs shirrs shires shores shiers charrs chares shoers shrews sheers tiaras charros cheerios cherries
pariahs shariahs rias hoorahs cerias norias kerrias jarrahs gerahs hurrahs horahs varias surahs pharaohs ferias arias raias sirrahs dourahs yttrias torahs sharias ras
sharia shariah shri share shear