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.
rugose rugosa rugous rugs recuse raucous regs rags rigs rocs rucks rocks rooks ragas raggs rakus rogues roques ruckus raggees raggies reggaes rookies rex
zygose rugose gos chegoes dagoes scouse cosey segos sagos goys cosie goas goes goos goose goosey mucosae jocose gogos ligase logos mucose rugosa egos nicoise bigos rugous dagos fucose chigoes
rug ruga rugae ergo erugo frug drug druggie druggy trug