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.
nacho natch nautch gnash niche notch nucha nuchae nitchie nosh
macho nacho cache cachou catch gaucho quaich latch hatch leachy mach mucho batch match natch patch peachy poachy reach roach dacha tache watch each beach echo laich chao chow bach ahchoo achy achoo mache ache coach gouache leach loach beachy pacha peach poach ratch reecho sauch tach teach chowchow