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.
serene serein serine serin siren syren serrano sierran sorn sciurine saran sarin saurian
arene pyrene gyrene terrene serene erne barren greenie drone lierne serine boreen bren larine brine urine rein frena crone cornea narine borne prone terrine chorine whereon warren tureen trine treen purine ferine terreen kerne pereon neurine murrine murein marine serein trone taurine sciurine rune journey carney hereon barney irone herein krone gurney moreen renew siren murine borane terne careen syren arena triene tourney dourine green furane pyrone wren bourne prune preen neurone terrane wherein chirren crane shrine
sere ser sure suer sore siree sire sierra serow serry serai sera seer sear saree cere user