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.
terrace trace terce tierce terras terries terse trice terrazzo truce terais tarres derries tarries torrs trees tears trass toras tiers trays derays derris durras torahs dearies durries hydrase yttrias
terrace race brace grace orrice trace
terra terrae terai terry tetra