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.
honours honors honorees honers henrys henries henneries
honours tenours inures senoras pawnors knurs noirs noris nurse enures honors knaurs senors juniors coenures coenurus manors manures minors seniors senores snores tenors canoers donors tenures