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.
modus mods moods modes medusa medius medusae muds mads muts meds mots mids mauts motes maids meads midis meeds mauds moats mutts moots mutes motts mottes meatus medias mutase mottos middays middies mottoes muddies maydays meadows moieties mats
nodus modus ods routs foods nidus roads piteous lodes quods rods duteous shouts radius touts luteous poods zooids goods dues gowds vodous ouds yodhs woods toads dodos sodas lotus douse medusa hoods moods cods voids hideous nodous geodes feods bouts odds odious goads mods duos setous knouts beauteous touse bods kudus gouts loads iodous pouts fatuous sods hods codes modes coeds loids gods riotous nodes rodes medius bodes louts roods odes geoids pods nods outs codas duds tedious tods odas woads woodsy diodes hyoids yods
mod meoued mode modi mood moody