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.
church churchy cherish
curch lurch church crouch orach march qursh carroch perch gursh grouchy grouch currach crutch caroch torch larch brach grutch birch barouche arch ruche rouche farouche merch parch porch diarchy torchy rich search churchy
churro churr ochreae ochre chorea chore chiru chirre chirr chiro cherry chary charry charro charr chare char ochrea ochry