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.
cur curr cure curio curry curia curie car currie cru cry curiae cor core crow guru cory care kuru carr guar crew craw coir gaur queer quare cowry kaury kauri gurry guiro coria cooer carry query quire corrie cowrie kouroi quaere quarry queuer