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.
rams reams roams ramus ramees ramies ramose ramous rims rums roms rems rooms rimes remise remiss rhymes rimose rimous romeos rumbas roomies rummies
bams pams shams whams tams dams seams roams reams rams loams beams lams gams cams jams hams foams teams chams yams