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.
pernio pereion porno prion pereon perron hyperon perinea pirn porn paranoia porny prawn preen purin pyran parian pirana purana pyrene
pernio garni turion serrano porno morrion morion merino marrano guarani carrion rani carnie journo hernia virion byrnie burnie prion durion chorion
per pear peer peerie peery pere perea pereia peri perry pier aper apery opera