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.
terreens terrenes treens tureens terns terrines terranes terrains triens ternes trienes trueness trainees tarns trans turns teariness tarriness tronas trains turions direness dearness tarriance tyrannous darns durns drains drowns trines trones
boreens careens preens tureens terreens moreens treens greens serenes barrens mureins reins gyrenes wrens sirens sereins arenes pyrenes arenas phrensy syrens pereons terrenes brens triens warrens
terreen terrene terne terrain terrane terrine