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.
pound pond poind punned ponied punt pend point pined punty paned punto panda pandy pinned punnet pointe peined panada penned pained pointy pawned panned peened hypnoid pant pent pint
found bound sound wound mound hound round pound monde coned honda count bund mount bond mondo phoned zoned poind tondi honed maundy gonad undo toned sonde fund monad rondo neoned fount undy fundi maund fondu tondo unde boned condo fond zooned mooned pond tuned yond
pun peon peony pion pone pony poon puna punny puny spun upon