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.
corona coronae cornua cornea corn crone croon corny crown krona cornu crony crania carina koruna carrion coreign carinae carn curn cairn kroon crane carny korun krone groin grana groan grown carney careen curran carnie cranny cairny garron koruny groyne krooni guarana
corona krona trona frown crown carrion giron jarina durion irone frena boron coronae brown farina guarana baron barony groin varna kroon maroon morion morrion neurone pereon pirana prone pyrone drone trone whereon roan cornua grana virion arena grown croon carina irony gyron heron koruna hernia heroin crone hereon groan crony cornea turion krone marina marron moron neuron hyperon perron prion purana diuron drown garron iron chorion
cor coir cooer core coria corrie cory cowrie cowry crow cooker cookery score scoria scoriae