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.
currachs curches cratches caroaches carroches carritches crashes creches crutches caroches crouches crotches crushes gurshes qurshes creeshes grouches grutches qurushes
brachs currachs torches preaches perches orchis merches marches larches rachis reaches roaches arches aurochs birches breaches braches broaches earaches huaraches huarachos caroaches curches lurches mariachis oraches parches porches searches churches