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.
carrion garron carina carn carinae crony crone croon cairn crown carny carnie careen curran carney corona cairny coreign coronae corn grin curn karn corny kroon crane grain krona groin grown cornu krone garni crania cranny grainy groyne krooni guarana guarani
carrion morrion turion briony virion garron marron morion murrain murrine pereion perron prion durion terrain terrine chorion rin
carr carry corrie currie acari scarry car