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.
mirador marauder moratory moratoria murder murderee martyr mortar martyry mortary
parador mirador toreador deaerator radar ardor ardour barrator aerator forrader gyrator corridor curator grader narrator orator parader sordor hydrator trader