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.
shard shared shaird sheared shred chard sherd shored shrewd shroud chared chaired sheered shirred charade charred shrewdie chart shirt short chord shirty shorty chored chirred choired churred shortie choroid sheroot chariot charity cheered tiaraed choreoid chorioid
hard shard chard sherd feared guard sard soared fared hardy pard rared pardy roared neared sarod shared yaird heard lard tardo cared tared hoard ward caird farad arid chart shaird liard fard barde seared hared herd beard board bared pardi reared pared bard card eared laird dared lardy tardy garda teared geared wared chared chord nard hart oared sheared shred yard
share sharia shariah char chare charr charro charry chary shear sherry shire shirr shore shrew shri