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.
kroons croons kerns karns kirns crowns kernes groins groans crones cronies groynes korunas coronas garrons carrions curns grins corns grans carns cornus cranes cairns greens grains querns carnies careens currans gurneys carinas corneas carneys guaranas greenies greyness crannies goriness grayness corneous guernsey guaranis 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
kroon krooni croon krona krone