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.
nourishes
marishes perishes cherishes parishes nourishes riches trashes marshes rushes girshes orishas reshes brashes brushes qurushes freshes crashes crushes gurshes qurshes rashes rishis