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.
pyranoid paranoid pyrenoid pernod prawned pronto pruned preened pronota preowned preunite print parent
pyranoid paranoid serranoid ranid araneid coronoid crinoid muraenid pyrenoid serranid uranide
pyran paranoea paranoia pirana prawn purana pyrene pyrone