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.
nomen noumena numen gnomon nomina nominee numina newmown pneumonia
omen nomen yeomen women men yeoman daimen amen toman numen mien menu mean noumena showmen limen hymen ramen rumen seamen baymen meno bowmen soman tamein lawmen cowmen semen jomon cymene woman roman lumen demean foemen gnomon lomein laymen womyn yamen vimen bemean
nome nom gnome name noma nomoi anomie anomy unmew