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.
tierces terces terraces truces traces trices diereses terrases dieresis diaereses diaeresis torses tresses trioses trasses trusses diureses diuresis derrises terrazzos druses tarsus torsos dresses drosses drowses
coerces tierces merces terces pierces trices braces forces rices mercies varices perses murices farces graces cruces verses recess precess carices traces boraces terraces hyraces erses sources cercis prices races farcies orrices truces