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.
arecas arcs araks arcus argues arracks arks argus argosy arkose
arecas recks orcas mercs curacoas creaks recs wreaks wrecks barcas breaks ericas fracas freaks phreaks verrucas gearcase carcase carcass cariocas curacaos maracas myricas drecks