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.
prion pereion purin prone parian pernio pyrone pereon perron purine perinea hyperon porn pirn porno prawn preen porny pyran prune pirana purana pyrene paranoea paranoia
carrion morion morrion chorion durion prion virion turion rin corona merino herein pernio narine brown trone crony rein murein moron iron briony marina kroon marine mirin trine barony roan krona hyperon murrain serine hereon pyrone whereon urine terrine taurine durian drone dourine purin pereion serein grin saurian murrine irony crone baron rain boron gyron bruin giron murine marron perron brin heron neurone ruin farina maroon croon grown neuron brine ferine krone burin groin larine briny heroin chorine groan wherein neurine carina pereon parian garron brain crown prone jarina sarin purine grain diuron serin drain drown frown terrain train trona sciurine irone shrine
pro pariah peri prao proa prow puri pyro