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.
physics physiques fossicks fiscs viscus fescues fiascos fuscous viscose viscous
physics sics sicks basics fossicks mosaics musicks musics