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.
traces terraces truces trices terces trasses tierces terrases torses trusses tresses trioses hydrases terrazzos torsos druses tarsus trousseaus dresses drowses drosses derrises diereses dieresis diureses diuresis duresses
hyraces races terraces traces braces boraces graces truces crazes recess cruces pierces murices rosacea forces varices precess piracies mercies process hydrases arrases coerces phrases rices gyrases whereases farcies ureases orrices brazes trices boreases grazes rases curacies greases erases razes tierces crases urases creases prases prices sources terces terrases merces carices farces charases
trace terais terce torahs toras trass trays trice truce strass straws strays