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.
croons kroons crowns crones coronas cronies corns carns curns carrions cairns groans cranes cornus groins careens carinas garrons currans corneas carneys groynes carnies corneous crannies kirns karns grins grans kerns grains querns kernes greens cornice korunas gurneys currency grayness greenies greyness guaranas guaranis guernsey goriness grannies
croons maroons kroons tronas pyrones diurons pereons porns irons herons hyperons neurones irones drowns turions groans morions garrons groins virions coronas carrions gyrons girons morons roans crowns borons frowns corns barons neurons morrions morns marrons horns burnoose heroins browns frons crones pereions perrons prions sorns drones durions trones chorions
croon corona coronae crone crony crown kroon krooni