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.
kirns kerns karns kroons cairns kernes korunas carns grans corns grins curns crowns croons greens crones cranes grains cornus querns groins groans currans carinas garrons corneas groynes gurneys careens carnies carneys coronas carrions corneous goriness grayness greyness guaranas guernsey greenness queerness
bairns girns pirns firns airns kirns shairns cairns herons corns rinse lorans grans parians rains bourns carrions bournes bruins morns learns barons liernes murines curns saurians serins murrains morions heroines ruins journos prions cornus purins irons grains brines querns mureins sorns yarns shorans carns chorions warrens urns turns trines trans terrines terns taurines durns durians dourines darns girons morons sarans sereins mourns barrens reearns rins garrons pornos ornis kerns heroins farinas neurines marrons herns groins marinas pereions horns mirins pyrans gyrons purines reins runs grins sciurines earns merinos marines jarinas currans varnas brains brins borons barns brens burins brans wyverns virions burns chorines kernes wrens morrions karns warns burans churns erns furans hyperons ernes moraines porns ferns carinas reruns frons neurons perrons sirens sarins syrens diurons drains durions tarns ternes terrains trains triens turions urines serines sharns shrines yearns
kirn karn kern kerne krona krone