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.
corns cornus corneas coronas curns carns corneous cranes crowns crones cairns croons carinas careens carnies currans carneys cornice cronies korunas crannies goriness carrions kirns grins grans kerns karns groins kernes querns grains groans greens kroons gurneys garrons groynes guernsey greyness currency guaranas grayness grannies guaranis greenies greenness guaranies queerness
horns sorns porns morns corns firns burins virions karns bournes barrens grans liernes varnas ferns irons learns groins brins garrons morrions purins ornis gyrons prions sarans cornus airns marrons croons browns querns reruns maroons yarns sharns churns warrens urns turions tronas terns tarns durions drones darns herons brens grins journos pornos bourns kernes kirns reearns serins pyrans mirins perrons brans curns irones kroons sirens wrens sarins ernes carrions crowns roans rins pereions neurones crones barons earns groans morions girons frowns runs wyverns bairns heroins burns borons morons carns pyrones pirns coronas erns burans kerns herns lorans hyperons furans currans barns mourns syrens frons drowns cairns ternes durns pereons trans trones girns turns warns diurons chorions shairns neurons shorans yearns
cornea corn cornu cornua corny crane acorn coreign crony carn carney crania corona carnie cranny crone coronae curn carny scorn