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.
karroos karoos kaross carrs kouros kauris kerries carries kauries kerrias carious carouse kirs kris gars cars kors quarries carse kurus keirs cares currs grows kiers koras gaurs gross cross crows guars caress cooers grouse coarse guiros caries curios kersey crouse kyries crosse corries curiosa curious curries gurries quaeres
karroos roose churros sorrows cirrose morrows arrows barrios barrows borrows broos burros burrows farrows ferrous furrows harrows karoos marrows morros narrows cirrous charros yarrows