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.
conidian condign condone contain continua continue continuo guanidin guanidine quinidine canton
conidian guanidin guanidine quinidine sanidine
conidia canid cnida cnidae condo coned conoid gonidia aconite