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