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.
terrains terrines terranes trains trans terns terrenes terreens trainees trines ternes drains tarriness teariness turions trannies taurines tarns turns tyrannies tarriance tyrannise tyrannous triens trance tronas treens durions durians trienes tureens truancy dourines trueness dearness tyrannize darns durns drowns trones
brains drains grains murrains terrains trains rains rins cairns terranes airns farinas morrions boranes ranis grins bairns terrines cranes brins taurines furans morions furanes virions sarins neurines bruins shorans chorions urines trines trans marines reins piranas durions moraines merinos serins prions pyrans sciurines heroins purines ruins groins saurians puranas brawns burans dourines guaranas brines roans sereins mirins rinse marinas carinas durians groans jarinas guaranis serines murines currans serranos brans sarans purins prawns carrions marranos burins parians lorans grans mureins triens turions chorines shairns shrines
terrain terrane terreen terrene terrine