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.
karns kirns kerns carns kroons cairns kernes carinas garrons carnies carneys careens guaranis guaranas carrions grans grins curns corns guaranies croons crowns cornus cranes groins groans grains querns crones greens korunas cronies gurneys currans corneas groynes guernsey grayness greenies crannies corneous goriness grannies greyness greenness queerness
barns sharns reearns warns karns learns yearns earns tarns darns yarns carns groans roans ruanas rains ernes brains drains ranis querns herns erns brawns purins cranes herons curns barons prawns girons burns brens hyperons parians marranos currans guaranas saurians cairns durns churns wrens turns trains terrains ternes ornis sorns serranos murrains gyrons sarans grans burans horns pornos kirns piranas brans rins barrens furans bourns frons boranes liernes airns perrons birianis mirins garrons girns lorans sirens warrens furanes pirns porns borons kernes harianas burins urns brins wyverns kerns guaranis shairns cornus bairns journos marrons runs trans grains varnas irons mourns grins serins bournes morons firns pyrans corns puranas reruns sarins ferns diurons durians syrens terns terranes neurons shorans morns
karn carn carney carnie carny garni kern kerne kirn krona krone