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.
krona krone kroon krooni koruna corona kirn kern karn coronae crown korun groan crony croon groin crone grown grana kerne cornua crania garron carina koruny groyne cornea carinae carrion guarana carn corn curn gran grin
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